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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] hvm: Remove lots of custom trap-and-emulate code and defer to
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1203616962 0
# Node ID 09b53f27a18b68f3474347291a04eb66b489fb1f
# Parent 591cfd37bd5409d534034c64a3356a9b492b23bb
hvm: Remove lots of custom trap-and-emulate code and defer to
handle_mmio()->hvm_emulate_one()->x86_emulate().
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
xen/arch/x86/hvm/emulate.c | 22
xen/arch/x86/hvm/svm/emulate.c | 413 +----------------
xen/arch/x86/hvm/svm/svm.c | 790 ----------------------------------
xen/arch/x86/hvm/vmx/vmx.c | 502 ---------------------
xen/arch/x86/x86_emulate.c | 18
xen/include/asm-x86/hvm/hvm.h | 13
xen/include/asm-x86/hvm/svm/emulate.h | 93 ----
xen/include/asm-x86/x86_emulate.h | 6
8 files changed, 120 insertions(+), 1737 deletions(-)
diff -r 591cfd37bd54 -r 09b53f27a18b xen/arch/x86/hvm/emulate.c
--- a/xen/arch/x86/hvm/emulate.c Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/arch/x86/hvm/emulate.c Thu Feb 21 18:02:42 2008 +0000
@@ -664,6 +664,25 @@ static void hvmemul_load_fpu_ctxt(
{
if ( !current->fpu_dirtied )
hvm_funcs.fpu_dirty_intercept();
+}
+
+static int hvmemul_invlpg(
+ enum x86_segment seg,
+ unsigned long offset,
+ struct x86_emulate_ctxt *ctxt)
+{
+ struct hvm_emulate_ctxt *hvmemul_ctxt =
+ container_of(ctxt, struct hvm_emulate_ctxt, ctxt);
+ unsigned long addr;
+ int rc;
+
+ rc = hvmemul_virtual_to_linear(
+ seg, offset, 1, hvm_access_none, hvmemul_ctxt, &addr);
+
+ if ( rc == X86EMUL_OKAY )
+ hvm_funcs.invlpg_intercept(addr);
+
+ return rc;
}
static struct x86_emulate_ops hvm_emulate_ops = {
@@ -688,7 +707,8 @@ static struct x86_emulate_ops hvm_emulat
.hlt = hvmemul_hlt,
.inject_hw_exception = hvmemul_inject_hw_exception,
.inject_sw_interrupt = hvmemul_inject_sw_interrupt,
- .load_fpu_ctxt = hvmemul_load_fpu_ctxt
+ .load_fpu_ctxt = hvmemul_load_fpu_ctxt,
+ .invlpg = hvmemul_invlpg
};
int hvm_emulate_one(
diff -r 591cfd37bd54 -r 09b53f27a18b xen/arch/x86/hvm/svm/emulate.c
--- a/xen/arch/x86/hvm/svm/emulate.c Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/arch/x86/hvm/svm/emulate.c Thu Feb 21 18:02:42 2008 +0000
@@ -14,7 +14,6 @@
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
- *
*/
#include <xen/config.h>
@@ -28,314 +27,40 @@
#include <asm/hvm/svm/vmcb.h>
#include <asm/hvm/svm/emulate.h>
+int inst_copy_from_guest(
+ unsigned char *buf, unsigned long guest_eip, int inst_len);
-extern int inst_copy_from_guest(unsigned char *buf, unsigned long guest_eip,
- int inst_len);
-
-#define REX_PREFIX_BASE 0x40
-#define REX_X 0x02
-#define REX_W 0x08
-#define REX_R 0x04
-#define REX_B 0x01
-
-#define IS_REX_PREFIX(prefix) ((prefix & 0xf0) == REX_PREFIX_BASE)
-
-#define DECODE_MODRM_MOD(modrm) ((modrm & 0xC0) >> 6)
-
-#define DECODE_MODRM_REG(prefix, modrm) \
- ((prefix & REX_R) && IS_REX_PREFIX(prefix)) \
- ? (0x08 | ((modrm >> 3) & 0x07)) : ((modrm >> 3) & 0x07)
-
-#define DECODE_MODRM_RM(prefix, modrm) \
- ((prefix & REX_B) && IS_REX_PREFIX(prefix)) \
- ? (0x08 | (modrm & 0x07)) : (modrm & 0x07)
-
-#define DECODE_SIB_SCALE(sib) DECODE_MODRM_MOD(sib)
-
-#define DECODE_SIB_INDEX(prefix, sib) \
- ((prefix & REX_X) && IS_REX_PREFIX(prefix)) \
- ? (0x08 | ((sib >> 3) & 0x07)) : ((sib >> 3) & 0x07)
-
-#define DECODE_SIB_BASE(prefix, sib) DECODE_MODRM_RM(prefix, sib)
-
-
-static inline unsigned long DECODE_GPR_VALUE(
- struct cpu_user_regs *regs, u8 gpr_rm)
+static unsigned int is_prefix(u8 opc)
{
- unsigned long value;
- switch (gpr_rm)
- {
- case 0x0:
- value = regs->eax;
- break;
- case 0x1:
- value = regs->ecx;
- break;
- case 0x2:
- value = regs->edx;
- break;
- case 0x3:
- value = regs->ebx;
- break;
- case 0x4:
- value = regs->esp;
- case 0x5:
- value = regs->ebp;
- break;
- case 0x6:
- value = regs->esi;
- break;
- case 0x7:
- value = regs->edi;
- break;
+ switch ( opc )
+ {
+ case 0x66:
+ case 0x67:
+ case 0x2E:
+ case 0x3E:
+ case 0x26:
+ case 0x64:
+ case 0x65:
+ case 0x36:
+ case 0xF0:
+ case 0xF3:
+ case 0xF2:
#if __x86_64__
- case 0x8:
- value = regs->r8;
- break;
- case 0x9:
- value = regs->r9;
- break;
- case 0xA:
- value = regs->r10;
- break;
- case 0xB:
- value = regs->r11;
- break;
- case 0xC:
- value = regs->r12;
- break;
- case 0xD:
- value = regs->r13;
- break;
- case 0xE:
- value = regs->r14;
- break;
- case 0xF:
- value = regs->r15;
- break;
-#endif
- default:
- printk("Invlaid gpr_rm = %d\n", gpr_rm);
- ASSERT(0);
- value = (unsigned long)-1; /* error retrun */
+ case 0x40 ... 0x4f:
+#endif /* __x86_64__ */
+ return 1;
}
- return value;
+ return 0;
}
-
-#define CHECK_LENGTH64(num) \
- if (num > length) \
- { \
- *size = 0; \
- return (unsigned long) -1; \
- }
-
-#define modrm operand [0]
-
-#define sib operand [1]
-
-
-unsigned long get_effective_addr_modrm64(struct cpu_user_regs *regs,
- const u8 prefix, int inst_len,
- const u8 *operand, u8 *size)
+static unsigned long svm_rip2pointer(struct vcpu *v)
{
- unsigned long effective_addr = (unsigned long) -1;
- u8 length, modrm_mod, modrm_rm;
- u32 disp = 0;
- struct vcpu *v = current;
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
-
- HVM_DBG_LOG(DBG_LEVEL_1, "prefix = %x, length = %d, operand[0,1] = %x %x",
- prefix, *size, operand[0], operand[1]);
-
- if ((NULL == size) || (NULL == operand) || (1 > *size))
- {
- *size = 0;
- return effective_addr;
- }
-
- modrm_mod = DECODE_MODRM_MOD(modrm);
- modrm_rm = DECODE_MODRM_RM(prefix, modrm);
-
- length = *size;
- *size = 1;
- switch (modrm_rm)
- {
- case 0x4:
-#if __x86_64__
- case 0xC:
-#endif
- if (modrm_mod < 3)
- {
- *size = length;
- effective_addr = get_effective_addr_sib(vmcb, regs, prefix,
operand, size);
- }
- else
- {
- effective_addr = DECODE_GPR_VALUE(regs, modrm_rm);
- }
- break;
-
- case 0x5:
- if (0 < modrm_mod)
- {
- effective_addr = regs->ebp;
- *size = 1;
- break;
- }
-#if __x86_64__
- /* FALLTHRU */
- case 0xD:
- if (0 < modrm_mod)
- {
- *size = 1;
- effective_addr = regs->r13;
- break;
- }
-#endif
-
- CHECK_LENGTH64(*size + (u8)sizeof(u32));
-
- memcpy (&disp, operand + 1, sizeof (u32));
- *size += sizeof (u32);
-
-#if __x86_64__
- /* 64-bit mode */
- if (vmcb->cs.attr.fields.l && hvm_long_mode_enabled(v))
- return regs->eip + inst_len + *size + disp;
-#endif
- return disp;
-
- default:
- effective_addr = DECODE_GPR_VALUE(regs, modrm_rm);
-
- }
-
- if (3 > modrm_mod)
- {
- if (1 == modrm_mod )
- {
- CHECK_LENGTH64(*size + (u8)sizeof(u8));
- disp = sib;
- *size += sizeof (u8);
- }
- else if (2 == modrm_mod )
- {
- CHECK_LENGTH64(*size + sizeof (u32));
- memcpy (&disp, operand + 1, sizeof (u32));
- *size += sizeof (u32);
- }
-
- effective_addr += disp;
- }
-
- return effective_addr;
-}
-
-
-unsigned long get_effective_addr_sib(struct vmcb_struct *vmcb,
- struct cpu_user_regs *regs, const u8 prefix, const u8 *operand,
- u8 *size)
-{
- unsigned long base, effective_addr = (unsigned long)-1;
- u8 sib_scale, sib_idx, sib_base, length;
- u32 disp = 0;
-
- if (NULL == size || NULL == operand || 2 > *size)
- {
- *size = 0;
- return effective_addr;
- }
-
- sib_scale = DECODE_SIB_SCALE(sib);
- sib_idx = DECODE_SIB_INDEX(prefix, sib);
- sib_base = DECODE_SIB_BASE(prefix, sib);
-
- base = DECODE_GPR_VALUE(regs, sib_base);
-
- if ((unsigned long)-1 == base)
- {
- /*
- * Surely this is wrong. base should be allowed to be -1, even if
- * it's not the usual case...
- */
- *size = 0;
- return base;
- }
-
- length = *size;
- *size = 2;
- if (0x5 == (sib_base & 0x5))
- {
- switch (DECODE_MODRM_MOD(modrm))
- {
- case 0:
- CHECK_LENGTH64(*size + (u8)sizeof(u32));
- memcpy (&disp, operand + 2, sizeof(u32));
- *size += sizeof(u32);
- base = disp;
- break;
-
- case 1:
- CHECK_LENGTH64(*size + (u8)sizeof (u8));
- *size += sizeof(u8);
- base += operand [2];
- break;
-
- case 2:
- CHECK_LENGTH64(*size + (u8)sizeof (u32));
- memcpy(&disp, operand + 2, sizeof(u32));
- *size += sizeof(u32);
- base += disp;
- }
- }
-
- if (4 == sib_idx)
- return base;
-
- effective_addr = DECODE_GPR_VALUE(regs, sib_idx);
-
- effective_addr <<= sib_scale;
-
- return (effective_addr + base);
-}
-
-
-/* Get the register/mode number of src register in ModRM register. */
-unsigned int decode_dest_reg(u8 prefix, u8 m)
-{
- return DECODE_MODRM_REG(prefix, m);
-}
-
-unsigned int decode_src_reg(u8 prefix, u8 m)
-{
- return DECODE_MODRM_RM(prefix, m);
-}
-
-
-unsigned long svm_rip2pointer(struct vcpu *v)
-{
- /*
- * The following is subtle. Intuitively this code would be something like:
- *
- * if (16bit) addr = (cs << 4) + rip; else addr = rip;
- *
- * However, this code doesn't work for code executing after CR0.PE=0,
- * but before the %cs has been updated. We don't get signalled when
- * %cs is update, but fortunately, base contain the valid base address
- * no matter what kind of addressing is used.
- */
struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
unsigned long p = vmcb->cs.base + guest_cpu_user_regs()->eip;
- ASSERT(v == current);
- if (!(vmcb->cs.attr.fields.l && hvm_long_mode_enabled(v)))
+ if ( !(vmcb->cs.attr.fields.l && hvm_long_mode_enabled(v)) )
return (u32)p; /* mask to 32 bits */
- /* NB. Should mask to 16 bits if in real mode or 16-bit protected mode. */
return p;
}
-
-
-#define MAKE_INSTR(nm, ...) static const u8 OPCODE_##nm[] = { __VA_ARGS__ }
/*
* Here's how it works:
@@ -343,35 +68,14 @@ unsigned long svm_rip2pointer(struct vcp
* Following bytes: Opcode bytes.
* Special case: Last byte, if zero, doesn't need to match.
*/
+#define MAKE_INSTR(nm, ...) static const u8 OPCODE_##nm[] = { __VA_ARGS__ }
MAKE_INSTR(INVD, 2, 0x0f, 0x08);
MAKE_INSTR(WBINVD, 2, 0x0f, 0x09);
MAKE_INSTR(CPUID, 2, 0x0f, 0xa2);
MAKE_INSTR(RDMSR, 2, 0x0f, 0x32);
MAKE_INSTR(WRMSR, 2, 0x0f, 0x30);
-MAKE_INSTR(CLI, 1, 0xfa);
-MAKE_INSTR(STI, 1, 0xfb);
-MAKE_INSTR(RDPMC, 2, 0x0f, 0x33);
-MAKE_INSTR(CLGI, 3, 0x0f, 0x01, 0xdd);
-MAKE_INSTR(STGI, 3, 0x0f, 0x01, 0xdc);
-MAKE_INSTR(VMRUN, 3, 0x0f, 0x01, 0xd8);
-MAKE_INSTR(VMLOAD, 3, 0x0f, 0x01, 0xda);
-MAKE_INSTR(VMSAVE, 3, 0x0f, 0x01, 0xdb);
MAKE_INSTR(VMCALL, 3, 0x0f, 0x01, 0xd9);
-MAKE_INSTR(PAUSE, 2, 0xf3, 0x90);
-MAKE_INSTR(SKINIT, 3, 0x0f, 0x01, 0xde);
-MAKE_INSTR(MOV2CR, 3, 0x0f, 0x22, 0x00);
-MAKE_INSTR(MOVCR2, 3, 0x0f, 0x20, 0x00);
-MAKE_INSTR(MOV2DR, 3, 0x0f, 0x23, 0x00);
-MAKE_INSTR(MOVDR2, 3, 0x0f, 0x21, 0x00);
-MAKE_INSTR(PUSHF, 1, 0x9c);
-MAKE_INSTR(POPF, 1, 0x9d);
-MAKE_INSTR(RSM, 2, 0x0f, 0xaa);
-MAKE_INSTR(INVLPG, 3, 0x0f, 0x01, 0x00);
-MAKE_INSTR(INVLPGA,3, 0x0f, 0x01, 0xdf);
MAKE_INSTR(HLT, 1, 0xf4);
-MAKE_INSTR(CLTS, 2, 0x0f, 0x06);
-MAKE_INSTR(LMSW, 3, 0x0f, 0x01, 0x00);
-MAKE_INSTR(SMSW, 3, 0x0f, 0x01, 0x00);
MAKE_INSTR(INT3, 1, 0xcc);
static const u8 *opc_bytes[INSTR_MAX_COUNT] =
@@ -381,55 +85,24 @@ static const u8 *opc_bytes[INSTR_MAX_COU
[INSTR_CPUID] = OPCODE_CPUID,
[INSTR_RDMSR] = OPCODE_RDMSR,
[INSTR_WRMSR] = OPCODE_WRMSR,
- [INSTR_CLI] = OPCODE_CLI,
- [INSTR_STI] = OPCODE_STI,
- [INSTR_RDPMC] = OPCODE_RDPMC,
- [INSTR_CLGI] = OPCODE_CLGI,
- [INSTR_STGI] = OPCODE_STGI,
- [INSTR_VMRUN] = OPCODE_VMRUN,
- [INSTR_VMLOAD] = OPCODE_VMLOAD,
- [INSTR_VMSAVE] = OPCODE_VMSAVE,
[INSTR_VMCALL] = OPCODE_VMCALL,
- [INSTR_PAUSE] = OPCODE_PAUSE,
- [INSTR_SKINIT] = OPCODE_SKINIT,
- [INSTR_MOV2CR] = OPCODE_MOV2CR,
- [INSTR_MOVCR2] = OPCODE_MOVCR2,
- [INSTR_MOV2DR] = OPCODE_MOV2DR,
- [INSTR_MOVDR2] = OPCODE_MOVDR2,
- [INSTR_PUSHF] = OPCODE_PUSHF,
- [INSTR_POPF] = OPCODE_POPF,
- [INSTR_RSM] = OPCODE_RSM,
- [INSTR_INVLPG] = OPCODE_INVLPG,
- [INSTR_INVLPGA]= OPCODE_INVLPGA,
- [INSTR_CLTS] = OPCODE_CLTS,
[INSTR_HLT] = OPCODE_HLT,
- [INSTR_LMSW] = OPCODE_LMSW,
- [INSTR_SMSW] = OPCODE_SMSW,
[INSTR_INT3] = OPCODE_INT3
};
-/*
- * Intel has a vmcs entry to give the instruction length. AMD doesn't. So we
- * have to do a little bit of work to find out...
- *
- * The caller can either pass a NULL pointer to the guest_eip_buf, or a pointer
- * to enough bytes to satisfy the instruction including prefix bytes.
- */
int __get_instruction_length_from_list(struct vcpu *v,
enum instruction_index *list, unsigned int list_count,
u8 *guest_eip_buf, enum instruction_index *match)
{
struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
- unsigned int inst_len = 0;
- unsigned int i;
- unsigned int j;
+ unsigned int i, j, inst_len = 0;
int found = 0;
enum instruction_index instr = 0;
u8 buffer[MAX_INST_LEN];
u8 *buf;
const u8 *opcode = NULL;
- if (guest_eip_buf)
+ if ( guest_eip_buf )
{
buf = guest_eip_buf;
}
@@ -439,53 +112,47 @@ int __get_instruction_length_from_list(s
buf = buffer;
}
- for (j = 0; j < list_count; j++)
+ for ( j = 0; j < list_count; j++ )
{
instr = list[j];
opcode = opc_bytes[instr];
ASSERT(opcode);
- while (inst_len < MAX_INST_LEN &&
+ while ( (inst_len < MAX_INST_LEN) &&
is_prefix(buf[inst_len]) &&
- !is_prefix(opcode[1]))
+ !is_prefix(opcode[1]) )
inst_len++;
ASSERT(opcode[0] <= 15); /* Make sure the table is correct. */
found = 1;
- for (i = 0; i < opcode[0]; i++)
+ for ( i = 0; i < opcode[0]; i++ )
{
/* If the last byte is zero, we just accept it without checking */
- if (i == opcode[0]-1 && opcode[i+1] == 0)
+ if ( (i == (opcode[0]-1)) && (opcode[i+1] == 0) )
break;
- if (buf[inst_len+i] != opcode[i+1])
+ if ( buf[inst_len+i] != opcode[i+1] )
{
found = 0;
break;
}
}
- if (found)
- break;
- }
-
- /* It's a match */
- if (found)
- {
- inst_len += opcode[0];
-
- ASSERT(inst_len <= MAX_INST_LEN);
-
- if (match)
- *match = instr;
-
- return inst_len;
+ if ( found )
+ goto done;
}
printk("%s: Mismatch between expected and actual instruction bytes: "
"eip = %lx\n", __func__, (unsigned long)vmcb->rip);
return 0;
+
+ done:
+ inst_len += opcode[0];
+ ASSERT(inst_len <= MAX_INST_LEN);
+ if ( match )
+ *match = instr;
+ return inst_len;
}
/*
diff -r 591cfd37bd54 -r 09b53f27a18b xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/arch/x86/hvm/svm/svm.c Thu Feb 21 18:02:42 2008 +0000
@@ -73,6 +73,7 @@ static void svm_fpu_dirty_intercept(void
static void svm_fpu_dirty_intercept(void);
static int svm_msr_read_intercept(struct cpu_user_regs *regs);
static int svm_msr_write_intercept(struct cpu_user_regs *regs);
+static void svm_invlpg_intercept(unsigned long vaddr);
/* va of hardware host save area */
static void *hsa[NR_CPUS] __read_mostly;
@@ -472,28 +473,6 @@ static void svm_sync_vmcb(struct vcpu *v
arch_svm->vmcb_in_sync = 1;
svm_vmsave(arch_svm->vmcb);
-}
-
-static unsigned long svm_get_segment_base(struct vcpu *v, enum x86_segment seg)
-{
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
- int long_mode = vmcb->cs.attr.fields.l && hvm_long_mode_enabled(v);
-
- switch ( seg )
- {
- case x86_seg_cs: return long_mode ? 0 : vmcb->cs.base;
- case x86_seg_ds: return long_mode ? 0 : vmcb->ds.base;
- case x86_seg_es: return long_mode ? 0 : vmcb->es.base;
- case x86_seg_fs: svm_sync_vmcb(v); return vmcb->fs.base;
- case x86_seg_gs: svm_sync_vmcb(v); return vmcb->gs.base;
- case x86_seg_ss: return long_mode ? 0 : vmcb->ss.base;
- case x86_seg_tr: svm_sync_vmcb(v); return vmcb->tr.base;
- case x86_seg_gdtr: return vmcb->gdtr.base;
- case x86_seg_idtr: return vmcb->idtr.base;
- case x86_seg_ldtr: svm_sync_vmcb(v); return vmcb->ldtr.base;
- default: BUG();
- }
- return 0;
}
static void svm_get_segment_register(struct vcpu *v, enum x86_segment seg,
@@ -804,7 +783,6 @@ static struct hvm_function_table svm_fun
.load_cpu_ctxt = svm_load_vmcb_ctxt,
.interrupt_blocked = svm_interrupt_blocked,
.guest_x86_mode = svm_guest_x86_mode,
- .get_segment_base = svm_get_segment_base,
.get_segment_register = svm_get_segment_register,
.set_segment_register = svm_set_segment_register,
.update_host_cr3 = svm_update_host_cr3,
@@ -820,7 +798,8 @@ static struct hvm_function_table svm_fun
.wbinvd_intercept = svm_wbinvd_intercept,
.fpu_dirty_intercept = svm_fpu_dirty_intercept,
.msr_read_intercept = svm_msr_read_intercept,
- .msr_write_intercept = svm_msr_write_intercept
+ .msr_write_intercept = svm_msr_write_intercept,
+ .invlpg_intercept = svm_invlpg_intercept
};
int start_svm(struct cpuinfo_x86 *c)
@@ -987,677 +966,10 @@ static void svm_vmexit_do_cpuid(struct c
__update_guest_eip(regs, inst_len);
}
-static unsigned long *get_reg_p(
- unsigned int gpreg,
- struct cpu_user_regs *regs, struct vmcb_struct *vmcb)
-{
- unsigned long *reg_p = NULL;
- switch (gpreg)
- {
- case SVM_REG_EAX:
- reg_p = (unsigned long *)®s->eax;
- break;
- case SVM_REG_EBX:
- reg_p = (unsigned long *)®s->ebx;
- break;
- case SVM_REG_ECX:
- reg_p = (unsigned long *)®s->ecx;
- break;
- case SVM_REG_EDX:
- reg_p = (unsigned long *)®s->edx;
- break;
- case SVM_REG_EDI:
- reg_p = (unsigned long *)®s->edi;
- break;
- case SVM_REG_ESI:
- reg_p = (unsigned long *)®s->esi;
- break;
- case SVM_REG_EBP:
- reg_p = (unsigned long *)®s->ebp;
- break;
- case SVM_REG_ESP:
- reg_p = (unsigned long *)®s->esp;
- break;
-#ifdef __x86_64__
- case SVM_REG_R8:
- reg_p = (unsigned long *)®s->r8;
- break;
- case SVM_REG_R9:
- reg_p = (unsigned long *)®s->r9;
- break;
- case SVM_REG_R10:
- reg_p = (unsigned long *)®s->r10;
- break;
- case SVM_REG_R11:
- reg_p = (unsigned long *)®s->r11;
- break;
- case SVM_REG_R12:
- reg_p = (unsigned long *)®s->r12;
- break;
- case SVM_REG_R13:
- reg_p = (unsigned long *)®s->r13;
- break;
- case SVM_REG_R14:
- reg_p = (unsigned long *)®s->r14;
- break;
- case SVM_REG_R15:
- reg_p = (unsigned long *)®s->r15;
- break;
-#endif
- default:
- BUG();
- }
-
- return reg_p;
-}
-
-
-static unsigned long get_reg(
- unsigned int gpreg, struct cpu_user_regs *regs, struct vmcb_struct *vmcb)
-{
- unsigned long *gp;
- gp = get_reg_p(gpreg, regs, vmcb);
- return *gp;
-}
-
-
-static void set_reg(
- unsigned int gpreg, unsigned long value,
- struct cpu_user_regs *regs, struct vmcb_struct *vmcb)
-{
- unsigned long *gp;
- gp = get_reg_p(gpreg, regs, vmcb);
- *gp = value;
-}
-
-
static void svm_dr_access(struct vcpu *v, struct cpu_user_regs *regs)
{
HVMTRACE_0D(DR_WRITE, v);
__restore_debug_registers(v);
-}
-
-
-static void svm_get_prefix_info(struct vcpu *v, unsigned int dir,
- svm_segment_register_t **seg,
- unsigned int *asize)
-{
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
- unsigned char inst[MAX_INST_LEN];
- int i;
-
- memset(inst, 0, MAX_INST_LEN);
- if (inst_copy_from_guest(inst, svm_rip2pointer(v), sizeof(inst))
- != MAX_INST_LEN)
- {
- gdprintk(XENLOG_ERR, "get guest instruction failed\n");
- domain_crash(current->domain);
- return;
- }
-
- for (i = 0; i < MAX_INST_LEN; i++)
- {
- switch (inst[i])
- {
- case 0xf3: /* REPZ */
- case 0xf2: /* REPNZ */
- case 0xf0: /* LOCK */
- case 0x66: /* data32 */
-#ifdef __x86_64__
- /* REX prefixes */
- case 0x40:
- case 0x41:
- case 0x42:
- case 0x43:
- case 0x44:
- case 0x45:
- case 0x46:
- case 0x47:
-
- case 0x48:
- case 0x49:
- case 0x4a:
- case 0x4b:
- case 0x4c:
- case 0x4d:
- case 0x4e:
- case 0x4f:
-#endif
- continue;
- case 0x67: /* addr32 */
- *asize ^= 48; /* Switch 16/32 bits */
- continue;
- case 0x2e: /* CS */
- *seg = &vmcb->cs;
- continue;
- case 0x36: /* SS */
- *seg = &vmcb->ss;
- continue;
- case 0x26: /* ES */
- *seg = &vmcb->es;
- continue;
- case 0x64: /* FS */
- svm_sync_vmcb(v);
- *seg = &vmcb->fs;
- continue;
- case 0x65: /* GS */
- svm_sync_vmcb(v);
- *seg = &vmcb->gs;
- continue;
- case 0x3e: /* DS */
- *seg = &vmcb->ds;
- continue;
- default:
- break;
- }
- return;
- }
-}
-
-
-/* Get the address of INS/OUTS instruction */
-static int svm_get_io_address(
- struct vcpu *v, struct cpu_user_regs *regs,
- unsigned int size, ioio_info_t info,
- unsigned long *count, unsigned long *addr)
-{
- unsigned long reg;
- unsigned int asize, isize;
- int long_mode = 0;
- svm_segment_register_t *seg = NULL;
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
-
- /* If we're in long mode, don't check the segment presence & limit */
- long_mode = vmcb->cs.attr.fields.l && hvm_long_mode_enabled(v);
-
- /* d field of cs.attr is 1 for 32-bit, 0 for 16 or 64 bit.
- * l field combined with EFER_LMA says whether it's 16 or 64 bit.
- */
- asize = (long_mode)?64:((vmcb->cs.attr.fields.db)?32:16);
-
-
- /* The ins/outs instructions are single byte, so if we have got more
- * than one byte (+ maybe rep-prefix), we have some prefix so we need
- * to figure out what it is...
- */
- isize = vmcb->exitinfo2 - regs->eip;
-
- if (info.fields.rep)
- isize --;
-
- if (isize > 1)
- svm_get_prefix_info(v, info.fields.type, &seg, &asize);
-
- if (info.fields.type == IOREQ_WRITE)
- {
- reg = regs->esi;
- if (!seg) /* If no prefix, used DS. */
- seg = &vmcb->ds;
- if (!long_mode && (seg->attr.fields.type & 0xa) == 0x8) {
- svm_inject_exception(TRAP_gp_fault, 0, 0);
- return 0;
- }
- }
- else
- {
- reg = regs->edi;
- seg = &vmcb->es; /* Note: This is ALWAYS ES. */
- if (!long_mode && (seg->attr.fields.type & 0xa) != 0x2) {
- svm_inject_exception(TRAP_gp_fault, 0, 0);
- return 0;
- }
- }
-
- /* If the segment isn't present, give GP fault! */
- if (!long_mode && !seg->attr.fields.p)
- {
- svm_inject_exception(TRAP_gp_fault, 0, 0);
- return 0;
- }
-
- if (asize == 16)
- {
- *addr = (reg & 0xFFFF);
- *count = regs->ecx & 0xffff;
- }
- else
- {
- *addr = reg;
- *count = regs->ecx;
- }
- if (!info.fields.rep)
- *count = 1;
-
- if (!long_mode)
- {
- ASSERT(*addr == (u32)*addr);
- if ((u32)(*addr + size - 1) < (u32)*addr ||
- (seg->attr.fields.type & 0xc) != 0x4 ?
- *addr + size - 1 > seg->limit :
- *addr <= seg->limit)
- {
- svm_inject_exception(TRAP_gp_fault, 0, 0);
- return 0;
- }
-
- /* Check the limit for repeated instructions, as above we checked only
- the first instance. Truncate the count if a limit violation would
- occur. Note that the checking is not necessary for page granular
- segments as transfers crossing page boundaries will be broken up
- anyway. */
- if (!seg->attr.fields.g && *count > 1)
- {
- if ((seg->attr.fields.type & 0xc) != 0x4)
- {
- /* expand-up */
- if (!(regs->eflags & EF_DF))
- {
- if (*addr + *count * size - 1 < *addr ||
- *addr + *count * size - 1 > seg->limit)
- *count = (seg->limit + 1UL - *addr) / size;
- }
- else
- {
- if (*count - 1 > *addr / size)
- *count = *addr / size + 1;
- }
- }
- else
- {
- /* expand-down */
- if (!(regs->eflags & EF_DF))
- {
- if (*count - 1 > -(s32)*addr / size)
- *count = -(s32)*addr / size + 1UL;
- }
- else
- {
- if (*addr < (*count - 1) * size ||
- *addr - (*count - 1) * size <= seg->limit)
- *count = (*addr - seg->limit - 1) / size + 1;
- }
- }
- ASSERT(*count);
- }
-
- *addr += seg->base;
- }
-#ifdef __x86_64__
- else
- {
- if (seg == &vmcb->fs || seg == &vmcb->gs)
- *addr += seg->base;
-
- if (!is_canonical_address(*addr) ||
- !is_canonical_address(*addr + size - 1))
- {
- svm_inject_exception(TRAP_gp_fault, 0, 0);
- return 0;
- }
- if (*count > (1UL << 48) / size)
- *count = (1UL << 48) / size;
- if (!(regs->eflags & EF_DF))
- {
- if (*addr + *count * size - 1 < *addr ||
- !is_canonical_address(*addr + *count * size - 1))
- *count = (*addr & ~((1UL << 48) - 1)) / size;
- }
- else
- {
- if ((*count - 1) * size > *addr ||
- !is_canonical_address(*addr + (*count - 1) * size))
- *count = (*addr & ~((1UL << 48) - 1)) / size + 1;
- }
- ASSERT(*count);
- }
-#endif
-
- return 1;
-}
-
-
-static void svm_io_instruction(struct vcpu *v)
-{
- struct cpu_user_regs *regs;
- struct hvm_io_op *pio_opp;
- unsigned int port;
- unsigned int size, dir, df;
- ioio_info_t info;
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
-
- pio_opp = ¤t->arch.hvm_vcpu.io_op;
- pio_opp->instr = INSTR_PIO;
- pio_opp->flags = 0;
-
- regs = &pio_opp->io_context;
-
- /* Copy current guest state into io instruction state structure. */
- memcpy(regs, guest_cpu_user_regs(), HVM_CONTEXT_STACK_BYTES);
-
- info.bytes = vmcb->exitinfo1;
-
- port = info.fields.port; /* port used to be addr */
- dir = info.fields.type; /* direction */
- df = regs->eflags & X86_EFLAGS_DF ? 1 : 0;
-
- if (info.fields.sz32)
- size = 4;
- else if (info.fields.sz16)
- size = 2;
- else
- size = 1;
-
- if (dir==IOREQ_READ)
- HVMTRACE_2D(IO_READ, v, port, size);
- else
- HVMTRACE_3D(IO_WRITE, v, port, size, regs->eax);
-
- HVM_DBG_LOG(DBG_LEVEL_IO,
- "svm_io_instruction: port 0x%x eip=%x:%"PRIx64", "
- "exit_qualification = %"PRIx64,
- port, vmcb->cs.sel, (uint64_t)regs->eip, info.bytes);
-
- /* string instruction */
- if (info.fields.str)
- {
- unsigned long addr, count;
- paddr_t paddr;
- unsigned long gfn;
- uint32_t pfec;
- int sign = regs->eflags & X86_EFLAGS_DF ? -1 : 1;
-
- if (!svm_get_io_address(v, regs, size, info, &count, &addr))
- {
- /* We failed to get a valid address, so don't do the IO operation -
- * it would just get worse if we do! Hopefully the guest is handing
- * gp-faults...
- */
- return;
- }
-
- /* "rep" prefix */
- if (info.fields.rep)
- {
- pio_opp->flags |= REPZ;
- }
-
- /* Translate the address to a physical address */
- pfec = PFEC_page_present;
- if ( dir == IOREQ_READ ) /* Read from PIO --> write to RAM */
- pfec |= PFEC_write_access;
- if ( vmcb->cpl == 3 )
- pfec |= PFEC_user_mode;
- gfn = paging_gva_to_gfn(v, addr, &pfec);
- if ( gfn == INVALID_GFN )
- {
- /* The guest does not have the RAM address mapped.
- * Need to send in a page fault */
- svm_inject_exception(TRAP_page_fault, pfec, addr);
- return;
- }
- paddr = (paddr_t)gfn << PAGE_SHIFT | (addr & ~PAGE_MASK);
-
- /*
- * Handle string pio instructions that cross pages or that
- * are unaligned. See the comments in hvm_platform.c/handle_mmio()
- */
- if ((addr & PAGE_MASK) != ((addr + size - 1) & PAGE_MASK))
- {
- unsigned long value = 0;
-
- pio_opp->flags |= OVERLAP;
- pio_opp->addr = addr;
-
- if (dir == IOREQ_WRITE) /* OUTS */
- {
- if ( hvm_paging_enabled(current) )
- {
- int rv = hvm_copy_from_guest_virt(&value, addr, size);
- if ( rv == HVMCOPY_bad_gva_to_gfn )
- return; /* exception already injected */
- }
- else
- (void)hvm_copy_from_guest_phys(&value, addr, size);
- }
- else /* dir != IOREQ_WRITE */
- /* Remember where to write the result, as a *VA*.
- * Must be a VA so we can handle the page overlap
- * correctly in hvm_pio_assist() */
- pio_opp->addr = addr;
-
- if (count == 1)
- regs->eip = vmcb->exitinfo2;
-
- send_pio_req(port, 1, size, value, dir, df, 0);
- }
- else
- {
- unsigned long last_addr = sign > 0 ? addr + count * size - 1
- : addr - (count - 1) * size;
-
- if ((addr & PAGE_MASK) != (last_addr & PAGE_MASK))
- {
- if (sign > 0)
- count = (PAGE_SIZE - (addr & ~PAGE_MASK)) / size;
- else
- count = (addr & ~PAGE_MASK) / size + 1;
- }
- else
- regs->eip = vmcb->exitinfo2;
-
- send_pio_req(port, count, size, paddr, dir, df, 1);
- }
- }
- else
- {
- /*
- * On SVM, the RIP of the intruction following the IN/OUT is saved in
- * ExitInfo2
- */
- regs->eip = vmcb->exitinfo2;
-
- if (port == 0xe9 && dir == IOREQ_WRITE && size == 1)
- hvm_print_line(v, regs->eax); /* guest debug output */
-
- send_pio_req(port, 1, size, regs->eax, dir, df, 0);
- }
-}
-
-static void mov_from_cr(int cr, int gp, struct cpu_user_regs *regs)
-{
- unsigned long value = 0;
- struct vcpu *v = current;
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
-
- switch ( cr )
- {
- case 0:
- value = v->arch.hvm_vcpu.guest_cr[0];
- break;
- case 3:
- value = (unsigned long)v->arch.hvm_vcpu.guest_cr[3];
- break;
- case 4:
- value = (unsigned long)v->arch.hvm_vcpu.guest_cr[4];
- break;
- default:
- gdprintk(XENLOG_ERR, "invalid cr: %d\n", cr);
- domain_crash(v->domain);
- return;
- }
-
- HVMTRACE_2D(CR_READ, v, cr, value);
-
- set_reg(gp, value, regs, vmcb);
-
- HVM_DBG_LOG(DBG_LEVEL_VMMU, "mov_from_cr: CR%d, value = %lx", cr, value);
-}
-
-static int mov_to_cr(int gpreg, int cr, struct cpu_user_regs *regs)
-{
- unsigned long value;
- struct vcpu *v = current;
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
-
- value = get_reg(gpreg, regs, vmcb);
-
- HVMTRACE_2D(CR_WRITE, v, cr, value);
-
- HVM_DBG_LOG(DBG_LEVEL_1, "mov_to_cr: CR%d, value = %lx, current = %p",
- cr, value, v);
-
- switch ( cr )
- {
- case 0:
- return !hvm_set_cr0(value);
- case 3:
- return !hvm_set_cr3(value);
- case 4:
- return !hvm_set_cr4(value);
- default:
- gdprintk(XENLOG_ERR, "invalid cr: %d\n", cr);
- domain_crash(v->domain);
- return 0;
- }
-
- return 1;
-}
-
-static void svm_cr_access(
- struct vcpu *v, unsigned int cr, unsigned int type,
- struct cpu_user_regs *regs)
-{
- struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
- int inst_len = 0;
- int index,addr_size,i;
- unsigned int gpreg,offset;
- unsigned long value,addr;
- u8 buffer[MAX_INST_LEN];
- u8 prefix = 0;
- u8 modrm;
- enum x86_segment seg;
- int result = 1;
- enum instruction_index list_a[] = {INSTR_MOV2CR, INSTR_CLTS, INSTR_LMSW};
- enum instruction_index list_b[] = {INSTR_MOVCR2, INSTR_SMSW};
- enum instruction_index match;
-
- inst_copy_from_guest(buffer, svm_rip2pointer(v), sizeof(buffer));
-
- /* get index to first actual instruction byte - as we will need to know
- where the prefix lives later on */
- index = skip_prefix_bytes(buffer, sizeof(buffer));
-
- if ( type == TYPE_MOV_TO_CR )
- {
- inst_len = __get_instruction_length_from_list(
- v, list_a, ARRAY_SIZE(list_a), &buffer[index], &match);
- }
- else /* type == TYPE_MOV_FROM_CR */
- {
- inst_len = __get_instruction_length_from_list(
- v, list_b, ARRAY_SIZE(list_b), &buffer[index], &match);
- }
-
- inst_len += index;
-
- /* Check for REX prefix - it's ALWAYS the last byte of any prefix bytes */
- if (index > 0 && (buffer[index-1] & 0xF0) == 0x40)
- prefix = buffer[index-1];
-
- HVM_DBG_LOG(DBG_LEVEL_1, "eip = %lx", (unsigned long)regs->eip);
-
- switch ( match )
-
- {
- case INSTR_MOV2CR:
- gpreg = decode_src_reg(prefix, buffer[index+2]);
- result = mov_to_cr(gpreg, cr, regs);
- break;
-
- case INSTR_MOVCR2:
- gpreg = decode_src_reg(prefix, buffer[index+2]);
- mov_from_cr(cr, gpreg, regs);
- break;
-
- case INSTR_CLTS:
- v->arch.hvm_vcpu.guest_cr[0] &= ~X86_CR0_TS;
- svm_update_guest_cr(v, 0);
- HVMTRACE_0D(CLTS, current);
- break;
-
- case INSTR_LMSW:
- gpreg = decode_src_reg(prefix, buffer[index+2]);
- value = get_reg(gpreg, regs, vmcb) & 0xF;
- value = (v->arch.hvm_vcpu.guest_cr[0] & ~0xF) | value;
- result = !hvm_set_cr0(value);
- HVMTRACE_1D(LMSW, current, value);
- break;
-
- case INSTR_SMSW:
- value = v->arch.hvm_vcpu.guest_cr[0] & 0xFFFF;
- modrm = buffer[index+2];
- addr_size = svm_guest_x86_mode(v);
- if ( addr_size < 2 )
- addr_size = 2;
- if ( likely((modrm & 0xC0) >> 6 == 3) )
- {
- gpreg = decode_src_reg(prefix, modrm);
- set_reg(gpreg, value, regs, vmcb);
- }
- /*
- * For now, only implement decode of the offset mode, since that's the
- * only mode observed in a real-world OS. This code is also making the
- * assumption that we'll never hit this code in long mode.
- */
- else if ( (modrm == 0x26) || (modrm == 0x25) )
- {
- seg = x86_seg_ds;
- i = index;
- /* Segment or address size overrides? */
- while ( i-- )
- {
- switch ( buffer[i] )
- {
- case 0x26: seg = x86_seg_es; break;
- case 0x2e: seg = x86_seg_cs; break;
- case 0x36: seg = x86_seg_ss; break;
- case 0x64: seg = x86_seg_fs; break;
- case 0x65: seg = x86_seg_gs; break;
- case 0x67: addr_size ^= 6; break;
- }
- }
- /* Bail unless this really is a seg_base + offset case */
- if ( ((modrm == 0x26) && (addr_size == 4)) ||
- ((modrm == 0x25) && (addr_size == 2)) )
- {
- gdprintk(XENLOG_ERR, "SMSW emulation at guest address: "
- "%lx failed due to unhandled addressing mode."
- "ModRM byte was: %x \n", svm_rip2pointer(v), modrm);
- domain_crash(v->domain);
- }
- inst_len += addr_size;
- offset = *(( unsigned int *) ( void *) &buffer[index + 3]);
- offset = ( addr_size == 4 ) ? offset : ( offset & 0xFFFF );
- addr = hvm_get_segment_base(v, seg);
- addr += offset;
- result = (hvm_copy_to_guest_virt(addr, &value, 2)
- != HVMCOPY_bad_gva_to_gfn);
- }
- else
- {
- gdprintk(XENLOG_ERR, "SMSW emulation at guest address: %lx "
- "failed due to unhandled addressing mode!"
- "ModRM byte was: %x \n", svm_rip2pointer(v), modrm);
- domain_crash(v->domain);
- }
- break;
-
- default:
- BUG();
- }
-
- if ( result )
- __update_guest_eip(regs, inst_len);
}
static int svm_msr_read_intercept(struct cpu_user_regs *regs)
@@ -1899,68 +1211,12 @@ static void svm_vmexit_do_invalidate_cac
__update_guest_eip(regs, inst_len);
}
-void svm_handle_invlpg(const short invlpga, struct cpu_user_regs *regs)
-{
- struct vcpu *v = current;
- u8 opcode[MAX_INST_LEN], prefix, length = MAX_INST_LEN;
- unsigned long g_vaddr;
- int inst_len;
-
- /*
- * Unknown how many bytes the invlpg instruction will take. Use the
- * maximum instruction length here
- */
- if ( inst_copy_from_guest(opcode, svm_rip2pointer(v), length) < length )
- {
- gdprintk(XENLOG_ERR, "Error reading memory %d bytes\n", length);
- goto crash;
- }
-
- if ( invlpga )
- {
- inst_len = __get_instruction_length(v, INSTR_INVLPGA, opcode);
- __update_guest_eip(regs, inst_len);
-
- /*
- * The address is implicit on this instruction. At the moment, we don't
- * use ecx (ASID) to identify individual guests pages
- */
- g_vaddr = regs->eax;
- }
- else
- {
- /* What about multiple prefix codes? */
- prefix = (is_prefix(opcode[0]) ? opcode[0] : 0);
- inst_len = __get_instruction_length(v, INSTR_INVLPG, opcode);
- if ( inst_len <= 0 )
- {
- gdprintk(XENLOG_ERR, "Error getting invlpg instr len\n");
- goto crash;
- }
-
- inst_len--;
- length -= inst_len;
-
- /*
- * Decode memory operand of the instruction including ModRM, SIB, and
- * displacement to get effective address and length in bytes. Assume
- * the system in either 32- or 64-bit mode.
- */
- g_vaddr = get_effective_addr_modrm64(regs, prefix, inst_len,
- &opcode[inst_len], &length);
-
- inst_len += length;
- __update_guest_eip(regs, inst_len);
- }
-
- HVMTRACE_3D(INVLPG, v, !!invlpga, g_vaddr, (invlpga ? regs->ecx : 0));
-
- paging_invlpg(v, g_vaddr);
- svm_asid_g_invlpg(v, g_vaddr);
- return;
-
- crash:
- domain_crash(v->domain);
+static void svm_invlpg_intercept(unsigned long vaddr)
+{
+ struct vcpu *curr = current;
+ HVMTRACE_2D(INVLPG, curr, 0, vaddr);
+ paging_invlpg(curr, vaddr);
+ svm_asid_g_invlpg(curr, vaddr);
}
asmlinkage void svm_vmexit_handler(struct cpu_user_regs *regs)
@@ -2094,12 +1350,13 @@ asmlinkage void svm_vmexit_handler(struc
svm_vmexit_do_hlt(vmcb, regs);
break;
+ case VMEXIT_CR0_READ ... VMEXIT_CR15_READ:
+ case VMEXIT_CR0_WRITE ... VMEXIT_CR15_WRITE:
case VMEXIT_INVLPG:
- svm_handle_invlpg(0, regs);
- break;
-
case VMEXIT_INVLPGA:
- svm_handle_invlpg(1, regs);
+ case VMEXIT_IOIO:
+ if ( !handle_mmio() )
+ hvm_inject_exception(TRAP_gp_fault, 0, 0);
break;
case VMEXIT_VMMCALL:
@@ -2114,23 +1371,9 @@ asmlinkage void svm_vmexit_handler(struc
}
break;
- case VMEXIT_CR0_READ ... VMEXIT_CR15_READ:
- svm_cr_access(v, exit_reason - VMEXIT_CR0_READ,
- TYPE_MOV_FROM_CR, regs);
- break;
-
- case VMEXIT_CR0_WRITE ... VMEXIT_CR15_WRITE:
- svm_cr_access(v, exit_reason - VMEXIT_CR0_WRITE,
- TYPE_MOV_TO_CR, regs);
- break;
-
case VMEXIT_DR0_READ ... VMEXIT_DR7_READ:
case VMEXIT_DR0_WRITE ... VMEXIT_DR7_WRITE:
svm_dr_access(v, regs);
- break;
-
- case VMEXIT_IOIO:
- svm_io_instruction(v);
break;
case VMEXIT_MSR:
@@ -2176,10 +1419,7 @@ asmlinkage void svm_vmexit_handler(struc
asmlinkage void svm_trace_vmentry(void)
{
- struct vcpu *v = current;
-
- /* This is the last C code before the VMRUN instruction. */
- hvmtrace_vmentry(v);
+ hvmtrace_vmentry(current);
}
/*
diff -r 591cfd37bd54 -r 09b53f27a18b xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/arch/x86/hvm/vmx/vmx.c Thu Feb 21 18:02:42 2008 +0000
@@ -67,6 +67,7 @@ static void vmx_fpu_dirty_intercept(void
static void vmx_fpu_dirty_intercept(void);
static int vmx_msr_read_intercept(struct cpu_user_regs *regs);
static int vmx_msr_write_intercept(struct cpu_user_regs *regs);
+static void vmx_invlpg_intercept(unsigned long vaddr);
static int vmx_domain_initialise(struct domain *d)
{
@@ -699,35 +700,6 @@ static void vmx_ctxt_switch_to(struct vc
vmx_restore_guest_msrs(v);
vmx_restore_dr(v);
vpmu_load(v);
-}
-
-static unsigned long vmx_get_segment_base(struct vcpu *v, enum x86_segment seg)
-{
- unsigned long base = 0;
- int long_mode = 0;
-
- ASSERT(v == current);
-
- if ( hvm_long_mode_enabled(v) &&
- (__vmread(GUEST_CS_AR_BYTES) & X86_SEG_AR_CS_LM_ACTIVE) )
- long_mode = 1;
-
- switch ( seg )
- {
- case x86_seg_cs: if ( !long_mode ) base = __vmread(GUEST_CS_BASE); break;
- case x86_seg_ds: if ( !long_mode ) base = __vmread(GUEST_DS_BASE); break;
- case x86_seg_es: if ( !long_mode ) base = __vmread(GUEST_ES_BASE); break;
- case x86_seg_fs: base = __vmread(GUEST_FS_BASE); break;
- case x86_seg_gs: base = __vmread(GUEST_GS_BASE); break;
- case x86_seg_ss: if ( !long_mode ) base = __vmread(GUEST_SS_BASE); break;
- case x86_seg_tr: base = __vmread(GUEST_TR_BASE); break;
- case x86_seg_gdtr: base = __vmread(GUEST_GDTR_BASE); break;
- case x86_seg_idtr: base = __vmread(GUEST_IDTR_BASE); break;
- case x86_seg_ldtr: base = __vmread(GUEST_LDTR_BASE); break;
- default: BUG(); break;
- }
-
- return base;
}
static void vmx_get_segment_register(struct vcpu *v, enum x86_segment seg,
@@ -1068,7 +1040,6 @@ static struct hvm_function_table vmx_fun
.load_cpu_ctxt = vmx_load_vmcs_ctxt,
.interrupt_blocked = vmx_interrupt_blocked,
.guest_x86_mode = vmx_guest_x86_mode,
- .get_segment_base = vmx_get_segment_base,
.get_segment_register = vmx_get_segment_register,
.set_segment_register = vmx_set_segment_register,
.update_host_cr3 = vmx_update_host_cr3,
@@ -1086,7 +1057,8 @@ static struct hvm_function_table vmx_fun
.wbinvd_intercept = vmx_wbinvd_intercept,
.fpu_dirty_intercept = vmx_fpu_dirty_intercept,
.msr_read_intercept = vmx_msr_read_intercept,
- .msr_write_intercept = vmx_msr_write_intercept
+ .msr_write_intercept = vmx_msr_write_intercept,
+ .invlpg_intercept = vmx_invlpg_intercept
};
void start_vmx(void)
@@ -1261,452 +1233,11 @@ static void vmx_dr_access(unsigned long
__vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
}
-/*
- * Invalidate the TLB for va. Invalidate the shadow page corresponding
- * the address va.
- */
-static void vmx_do_invlpg(unsigned long va)
-{
- struct vcpu *v = current;
-
- HVMTRACE_2D(INVLPG, v, /*invlpga=*/ 0, va);
-
- /*
- * We do the safest things first, then try to update the shadow
- * copying from guest
- */
- paging_invlpg(v, va);
-}
-
-/* Get segment for OUTS according to guest instruction. */
-static enum x86_segment vmx_outs_get_segment(
- int long_mode, unsigned long eip, int inst_len)
-{
- unsigned char inst[MAX_INST_LEN];
- enum x86_segment seg = x86_seg_ds;
- int i;
- extern int inst_copy_from_guest(unsigned char *, unsigned long, int);
-
- if ( likely(cpu_has_vmx_ins_outs_instr_info) )
- {
- unsigned int instr_info = __vmread(VMX_INSTRUCTION_INFO);
-
- /* Get segment register according to bits 17:15. */
- switch ( (instr_info >> 15) & 7 )
- {
- case 0: seg = x86_seg_es; break;
- case 1: seg = x86_seg_cs; break;
- case 2: seg = x86_seg_ss; break;
- case 3: seg = x86_seg_ds; break;
- case 4: seg = x86_seg_fs; break;
- case 5: seg = x86_seg_gs; break;
- default: BUG();
- }
-
- goto out;
- }
-
- if ( !long_mode )
- eip += __vmread(GUEST_CS_BASE);
-
- memset(inst, 0, MAX_INST_LEN);
- if ( inst_copy_from_guest(inst, eip, inst_len) != inst_len )
- {
- gdprintk(XENLOG_ERR, "Get guest instruction failed\n");
- domain_crash(current->domain);
- goto out;
- }
-
- for ( i = 0; i < inst_len; i++ )
- {
- switch ( inst[i] )
- {
- case 0xf3: /* REPZ */
- case 0xf2: /* REPNZ */
- case 0xf0: /* LOCK */
- case 0x66: /* data32 */
- case 0x67: /* addr32 */
-#ifdef __x86_64__
- case 0x40 ... 0x4f: /* REX */
-#endif
- continue;
- case 0x2e: /* CS */
- seg = x86_seg_cs;
- continue;
- case 0x36: /* SS */
- seg = x86_seg_ss;
- continue;
- case 0x26: /* ES */
- seg = x86_seg_es;
- continue;
- case 0x64: /* FS */
- seg = x86_seg_fs;
- continue;
- case 0x65: /* GS */
- seg = x86_seg_gs;
- continue;
- case 0x3e: /* DS */
- seg = x86_seg_ds;
- continue;
- }
- }
-
- out:
- return seg;
-}
-
-static int vmx_str_pio_check_descriptor(int long_mode, unsigned long eip,
- int inst_len, enum x86_segment seg,
- unsigned long *base, u32 *limit,
- u32 *ar_bytes)
-{
- enum vmcs_field ar_field, base_field, limit_field;
-
- *base = 0;
- *limit = 0;
- if ( seg != x86_seg_es )
- seg = vmx_outs_get_segment(long_mode, eip, inst_len);
-
- switch ( seg )
- {
- case x86_seg_cs:
- ar_field = GUEST_CS_AR_BYTES;
- base_field = GUEST_CS_BASE;
- limit_field = GUEST_CS_LIMIT;
- break;
- case x86_seg_ds:
- ar_field = GUEST_DS_AR_BYTES;
- base_field = GUEST_DS_BASE;
- limit_field = GUEST_DS_LIMIT;
- break;
- case x86_seg_es:
- ar_field = GUEST_ES_AR_BYTES;
- base_field = GUEST_ES_BASE;
- limit_field = GUEST_ES_LIMIT;
- break;
- case x86_seg_fs:
- ar_field = GUEST_FS_AR_BYTES;
- base_field = GUEST_FS_BASE;
- limit_field = GUEST_FS_LIMIT;
- break;
- case x86_seg_gs:
- ar_field = GUEST_GS_AR_BYTES;
- base_field = GUEST_GS_BASE;
- limit_field = GUEST_GS_LIMIT;
- break;
- case x86_seg_ss:
- ar_field = GUEST_SS_AR_BYTES;
- base_field = GUEST_SS_BASE;
- limit_field = GUEST_SS_LIMIT;
- break;
- default:
- BUG();
- return 0;
- }
-
- if ( !long_mode || seg == x86_seg_fs || seg == x86_seg_gs )
- {
- *base = __vmread(base_field);
- *limit = __vmread(limit_field);
- }
- *ar_bytes = __vmread(ar_field);
-
- return !(*ar_bytes & X86_SEG_AR_SEG_UNUSABLE);
-}
-
-
-static int vmx_str_pio_check_limit(u32 limit, unsigned int size,
- u32 ar_bytes, unsigned long addr,
- unsigned long base, int df,
- unsigned long *count)
-{
- unsigned long ea = addr - base;
-
- /* Offset must be within limits. */
- ASSERT(ea == (u32)ea);
- if ( (u32)(ea + size - 1) < (u32)ea ||
- (ar_bytes & 0xc) != 0x4 ? ea + size - 1 > limit
- : ea <= limit )
- return 0;
-
- /* Check the limit for repeated instructions, as above we checked
- only the first instance. Truncate the count if a limit violation
- would occur. Note that the checking is not necessary for page
- granular segments as transfers crossing page boundaries will be
- broken up anyway. */
- if ( !(ar_bytes & X86_SEG_AR_GRANULARITY) && *count > 1 )
- {
- if ( (ar_bytes & 0xc) != 0x4 )
- {
- /* expand-up */
- if ( !df )
- {
- if ( ea + *count * size - 1 < ea ||
- ea + *count * size - 1 > limit )
- *count = (limit + 1UL - ea) / size;
- }
- else
- {
- if ( *count - 1 > ea / size )
- *count = ea / size + 1;
- }
- }
- else
- {
- /* expand-down */
- if ( !df )
- {
- if ( *count - 1 > -(s32)ea / size )
- *count = -(s32)ea / size + 1UL;
- }
- else
- {
- if ( ea < (*count - 1) * size ||
- ea - (*count - 1) * size <= limit )
- *count = (ea - limit - 1) / size + 1;
- }
- }
- ASSERT(*count);
- }
-
- return 1;
-}
-
-#ifdef __x86_64__
-static int vmx_str_pio_lm_check_limit(struct cpu_user_regs *regs,
- unsigned int size,
- unsigned long addr,
- unsigned long *count)
-{
- if ( !is_canonical_address(addr) ||
- !is_canonical_address(addr + size - 1) )
- return 0;
-
- if ( *count > (1UL << 48) / size )
- *count = (1UL << 48) / size;
-
- if ( !(regs->eflags & EF_DF) )
- {
- if ( addr + *count * size - 1 < addr ||
- !is_canonical_address(addr + *count * size - 1) )
- *count = (addr & ~((1UL << 48) - 1)) / size;
- }
- else
- {
- if ( (*count - 1) * size > addr ||
- !is_canonical_address(addr + (*count - 1) * size) )
- *count = (addr & ~((1UL << 48) - 1)) / size + 1;
- }
-
- ASSERT(*count);
-
- return 1;
-}
-#endif
-
-static void vmx_send_str_pio(struct cpu_user_regs *regs,
- struct hvm_io_op *pio_opp,
- unsigned long inst_len, unsigned int port,
- int sign, unsigned int size, int dir,
- int df, unsigned long addr,
- paddr_t paddr, unsigned long count)
-{
- /*
- * Handle string pio instructions that cross pages or that
- * are unaligned. See the comments in hvm_domain.c/handle_mmio()
- */
- if ( (addr & PAGE_MASK) != ((addr + size - 1) & PAGE_MASK) ) {
- unsigned long value = 0;
-
- pio_opp->flags |= OVERLAP;
-
- if ( dir == IOREQ_WRITE ) /* OUTS */
- {
- if ( hvm_paging_enabled(current) )
- {
- int rv = hvm_copy_from_guest_virt(&value, addr, size);
- if ( rv == HVMCOPY_bad_gva_to_gfn )
- return; /* exception already injected */
- }
- else
- (void)hvm_copy_from_guest_phys(&value, addr, size);
- }
- else /* dir != IOREQ_WRITE */
- /* Remember where to write the result, as a *VA*.
- * Must be a VA so we can handle the page overlap
- * correctly in hvm_pio_assist() */
- pio_opp->addr = addr;
-
- if ( count == 1 )
- regs->eip += inst_len;
-
- send_pio_req(port, 1, size, value, dir, df, 0);
- } else {
- unsigned long last_addr = sign > 0 ? addr + count * size - 1
- : addr - (count - 1) * size;
-
- if ( (addr & PAGE_MASK) != (last_addr & PAGE_MASK) )
- {
- if ( sign > 0 )
- count = (PAGE_SIZE - (addr & ~PAGE_MASK)) / size;
- else
- count = (addr & ~PAGE_MASK) / size + 1;
- } else
- regs->eip += inst_len;
-
- send_pio_req(port, count, size, paddr, dir, df, 1);
- }
-}
-
-static void vmx_do_str_pio(unsigned long exit_qualification,
- unsigned long inst_len,
- struct cpu_user_regs *regs,
- struct hvm_io_op *pio_opp)
-{
- unsigned int port, size;
- int dir, df, vm86;
- unsigned long addr, count = 1, base;
- paddr_t paddr;
- unsigned long gfn;
- u32 ar_bytes, limit, pfec;
- int sign;
- int long_mode = 0;
-
- vm86 = regs->eflags & X86_EFLAGS_VM ? 1 : 0;
- df = regs->eflags & X86_EFLAGS_DF ? 1 : 0;
-
- if ( test_bit(6, &exit_qualification) )
- port = (exit_qualification >> 16) & 0xFFFF;
- else
- port = regs->edx & 0xffff;
-
- size = (exit_qualification & 7) + 1;
- dir = test_bit(3, &exit_qualification); /* direction */
-
- if ( dir == IOREQ_READ )
- HVMTRACE_2D(IO_READ, current, port, size);
- else
- HVMTRACE_2D(IO_WRITE, current, port, size);
-
- sign = regs->eflags & X86_EFLAGS_DF ? -1 : 1;
- ar_bytes = __vmread(GUEST_CS_AR_BYTES);
- if ( hvm_long_mode_enabled(current) &&
- (ar_bytes & X86_SEG_AR_CS_LM_ACTIVE) )
- long_mode = 1;
- addr = __vmread(GUEST_LINEAR_ADDRESS);
-
- if ( test_bit(5, &exit_qualification) ) { /* "rep" prefix */
- pio_opp->flags |= REPZ;
- count = regs->ecx;
- if ( !long_mode &&
- (vm86 || !(ar_bytes & X86_SEG_AR_DEF_OP_SIZE)) )
- count &= 0xFFFF;
- }
-
- /*
- * In protected mode, guest linear address is invalid if the
- * selector is null.
- */
- if ( !vmx_str_pio_check_descriptor(long_mode, regs->eip, inst_len,
- dir==IOREQ_WRITE ? x86_seg_ds :
- x86_seg_es, &base, &limit,
- &ar_bytes) ) {
- if ( !long_mode ) {
- vmx_inject_hw_exception(current, TRAP_gp_fault, 0);
- return;
- }
- addr = dir == IOREQ_WRITE ? base + regs->esi : regs->edi;
- }
-
- if ( !long_mode )
- {
- /* Segment must be readable for outs and writeable for ins. */
- if ( ((dir == IOREQ_WRITE)
- ? ((ar_bytes & 0xa) == 0x8)
- : ((ar_bytes & 0xa) != 0x2)) ||
- !vmx_str_pio_check_limit(limit, size, ar_bytes,
- addr, base, df, &count) )
- {
- vmx_inject_hw_exception(current, TRAP_gp_fault, 0);
- return;
- }
- }
-#ifdef __x86_64__
- else if ( !vmx_str_pio_lm_check_limit(regs, size, addr, &count) )
- {
- vmx_inject_hw_exception(current, TRAP_gp_fault, 0);
- return;
- }
-#endif
-
- /* Translate the address to a physical address */
- pfec = PFEC_page_present;
- if ( dir == IOREQ_READ ) /* Read from PIO --> write to RAM */
- pfec |= PFEC_write_access;
- if ( ((__vmread(GUEST_SS_AR_BYTES) >> 5) & 3) == 3 )
- pfec |= PFEC_user_mode;
- gfn = paging_gva_to_gfn(current, addr, &pfec);
- if ( gfn == INVALID_GFN )
- {
- /* The guest does not have the RAM address mapped.
- * Need to send in a page fault */
- vmx_inject_exception(TRAP_page_fault, pfec, addr);
- return;
- }
- paddr = (paddr_t)gfn << PAGE_SHIFT | (addr & ~PAGE_MASK);
-
- vmx_send_str_pio(regs, pio_opp, inst_len, port, sign,
- size, dir, df, addr, paddr, count);
-}
-
-static void vmx_io_instruction(unsigned long exit_qualification,
- unsigned long inst_len)
-{
- struct cpu_user_regs *regs;
- struct hvm_io_op *pio_opp;
-
- pio_opp = ¤t->arch.hvm_vcpu.io_op;
- pio_opp->instr = INSTR_PIO;
- pio_opp->flags = 0;
-
- regs = &pio_opp->io_context;
-
- /* Copy current guest state into io instruction state structure. */
- memcpy(regs, guest_cpu_user_regs(), HVM_CONTEXT_STACK_BYTES);
-
- HVM_DBG_LOG(DBG_LEVEL_IO, "vm86 %d, eip=%x:%lx, "
- "exit_qualification = %lx",
- regs->eflags & X86_EFLAGS_VM ? 1 : 0,
- regs->cs, (unsigned long)regs->eip, exit_qualification);
-
- if ( test_bit(4, &exit_qualification) ) /* string instrucation */
- vmx_do_str_pio(exit_qualification, inst_len, regs, pio_opp);
- else
- {
- unsigned int port, size;
- int dir, df;
-
- df = regs->eflags & X86_EFLAGS_DF ? 1 : 0;
-
- if ( test_bit(6, &exit_qualification) )
- port = (exit_qualification >> 16) & 0xFFFF;
- else
- port = regs->edx & 0xffff;
-
- size = (exit_qualification & 7) + 1;
- dir = test_bit(3, &exit_qualification); /* direction */
-
- if ( dir == IOREQ_READ )
- HVMTRACE_2D(IO_READ, current, port, size);
- else
- HVMTRACE_3D(IO_WRITE, current, port, size, regs->eax);
-
- if ( port == 0xe9 && dir == IOREQ_WRITE && size == 1 )
- hvm_print_line(current, regs->eax); /* guest debug output */
-
- regs->eip += inst_len;
- send_pio_req(port, 1, size, regs->eax, dir, df, 0);
- }
+static void vmx_invlpg_intercept(unsigned long vaddr)
+{
+ struct vcpu *curr = current;
+ HVMTRACE_2D(INVLPG, curr, /*invlpga=*/ 0, vaddr);
+ paging_invlpg(curr, vaddr);
}
#define CASE_SET_REG(REG, reg) \
@@ -2541,7 +2072,7 @@ asmlinkage void vmx_vmexit_handler(struc
inst_len = __get_instruction_length(); /* Safe: INVLPG */
__update_guest_eip(inst_len);
exit_qualification = __vmread(EXIT_QUALIFICATION);
- vmx_do_invlpg(exit_qualification);
+ vmx_invlpg_intercept(exit_qualification);
break;
}
case EXIT_REASON_VMCALL:
@@ -2569,11 +2100,6 @@ asmlinkage void vmx_vmexit_handler(struc
case EXIT_REASON_DR_ACCESS:
exit_qualification = __vmread(EXIT_QUALIFICATION);
vmx_dr_access(exit_qualification, regs);
- break;
- case EXIT_REASON_IO_INSTRUCTION:
- exit_qualification = __vmread(EXIT_QUALIFICATION);
- inst_len = __get_instruction_length(); /* Safe: IN, INS, OUT, OUTS */
- vmx_io_instruction(exit_qualification, inst_len);
break;
case EXIT_REASON_MSR_READ:
inst_len = __get_instruction_length(); /* Safe: RDMSR */
@@ -2603,15 +2129,11 @@ asmlinkage void vmx_vmexit_handler(struc
case EXIT_REASON_TPR_BELOW_THRESHOLD:
break;
+ case EXIT_REASON_IO_INSTRUCTION:
case EXIT_REASON_APIC_ACCESS:
- {
- unsigned long offset;
- exit_qualification = __vmread(EXIT_QUALIFICATION);
- offset = exit_qualification & 0x0fffUL;
if ( !handle_mmio() )
hvm_inject_exception(TRAP_gp_fault, 0, 0);
break;
- }
case EXIT_REASON_INVD:
case EXIT_REASON_WBINVD:
@@ -2632,9 +2154,7 @@ asmlinkage void vmx_vmexit_handler(struc
asmlinkage void vmx_trace_vmentry(void)
{
- struct vcpu *v = current;
-
- hvmtrace_vmentry(v);
+ hvmtrace_vmentry(current);
}
/*
diff -r 591cfd37bd54 -r 09b53f27a18b xen/arch/x86/x86_emulate.c
--- a/xen/arch/x86/x86_emulate.c Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/arch/x86/x86_emulate.c Thu Feb 21 18:02:42 2008 +0000
@@ -3036,6 +3036,17 @@ x86_emulate(
struct segment_register reg;
unsigned long base, limit, cr0, cr0w;
+ if ( modrm == 0xdf ) /* invlpga */
+ {
+ generate_exception_if(in_realmode(ctxt, ops), EXC_UD);
+ generate_exception_if(!mode_ring0(), EXC_GP);
+ fail_if(ops->invlpg == NULL);
+ if ( (rc = ops->invlpg(x86_seg_none, truncate_ea(_regs.eax),
+ ctxt)) )
+ goto done;
+ break;
+ }
+
switch ( modrm_reg & 7 )
{
case 0: /* sgdt */
@@ -3096,6 +3107,13 @@ x86_emulate(
if ( (rc = ops->write_cr(0, cr0, ctxt)) )
goto done;
break;
+ case 7: /* invlpg */
+ generate_exception_if(!mode_ring0(), EXC_GP);
+ generate_exception_if(ea.type != OP_MEM, EXC_UD);
+ fail_if(ops->invlpg == NULL);
+ if ( (rc = ops->invlpg(ea.mem.seg, ea.mem.off, ctxt)) )
+ goto done;
+ break;
default:
goto cannot_emulate;
}
diff -r 591cfd37bd54 -r 09b53f27a18b xen/include/asm-x86/hvm/hvm.h
--- a/xen/include/asm-x86/hvm/hvm.h Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/include/asm-x86/hvm/hvm.h Thu Feb 21 18:02:42 2008 +0000
@@ -81,7 +81,6 @@ struct hvm_function_table {
*/
enum hvm_intblk (*interrupt_blocked)(struct vcpu *v, struct hvm_intack);
int (*guest_x86_mode)(struct vcpu *v);
- unsigned long (*get_segment_base)(struct vcpu *v, enum x86_segment seg);
void (*get_segment_register)(struct vcpu *v, enum x86_segment seg,
struct segment_register *reg);
void (*set_segment_register)(struct vcpu *v, enum x86_segment seg,
@@ -126,6 +125,7 @@ struct hvm_function_table {
void (*fpu_dirty_intercept)(void);
int (*msr_read_intercept)(struct cpu_user_regs *regs);
int (*msr_write_intercept)(struct cpu_user_regs *regs);
+ void (*invlpg_intercept)(unsigned long vaddr);
};
extern struct hvm_function_table hvm_funcs;
@@ -197,12 +197,6 @@ hvm_flush_guest_tlbs(void)
void hvm_hypercall_page_initialise(struct domain *d,
void *hypercall_page);
-
-static inline unsigned long
-hvm_get_segment_base(struct vcpu *v, enum x86_segment seg)
-{
- return hvm_funcs.get_segment_base(v, seg);
-}
static inline void
hvm_get_segment_register(struct vcpu *v, enum x86_segment seg,
@@ -321,7 +315,10 @@ void hvm_task_switch(
int32_t errcode);
enum hvm_access_type {
- hvm_access_insn_fetch, hvm_access_read, hvm_access_write
+ hvm_access_insn_fetch,
+ hvm_access_none,
+ hvm_access_read,
+ hvm_access_write
};
int hvm_virtual_to_linear_addr(
enum x86_segment seg,
diff -r 591cfd37bd54 -r 09b53f27a18b xen/include/asm-x86/hvm/svm/emulate.h
--- a/xen/include/asm-x86/hvm/svm/emulate.h Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/include/asm-x86/hvm/svm/emulate.h Thu Feb 21 18:02:42 2008 +0000
@@ -15,30 +15,10 @@
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
- *
*/
#ifndef __ASM_X86_HVM_SVM_EMULATE_H__
#define __ASM_X86_HVM_SVM_EMULATE_H__
-
-typedef enum OPERATING_MODE_ {
- INVALID_OPERATING_MODE = -1,
- LEGACY_MODE,
- LEGACY_16BIT,
- LONG_MODE,
- COMP_MODE,
- COMP_16BIT,
- OPMODE_16BIT,
-
- LEGACY_32BIT,
- COMP_32BIT,
- OPMODE_32BIT,
-
- LONG_64BIT,
- UNKNOWN_OP_MODE,
- NUM_OPERATING_MODES
-} OPERATING_MODE;
-
/* Enumerate some standard instructions that we support */
enum instruction_index {
@@ -47,87 +27,22 @@ enum instruction_index {
INSTR_CPUID,
INSTR_RDMSR,
INSTR_WRMSR,
- INSTR_CLI,
- INSTR_STI,
- INSTR_RDPMC,
- INSTR_CLGI,
- INSTR_STGI,
- INSTR_VMRUN,
- INSTR_VMLOAD,
- INSTR_VMSAVE,
INSTR_VMCALL,
- INSTR_PAUSE,
- INSTR_SKINIT,
- INSTR_MOV2CR, /* Mov register to CR */
- INSTR_MOVCR2, /* Not MOV CR2, but MOV CRn to register */
- INSTR_MOV2DR,
- INSTR_MOVDR2,
- INSTR_PUSHF,
- INSTR_POPF,
- INSTR_RSM,
- INSTR_INVLPG,
- INSTR_INVLPGA,
INSTR_HLT,
- INSTR_CLTS,
- INSTR_LMSW,
- INSTR_SMSW,
INSTR_INT3,
INSTR_MAX_COUNT /* Must be last - Number of instructions supported */
};
-
-extern unsigned long get_effective_addr_modrm64(
- struct cpu_user_regs *regs, const u8 prefix, int inst_len,
- const u8 *operand, u8 *size);
-extern unsigned long get_effective_addr_sib(struct vmcb_struct *vmcb,
- struct cpu_user_regs *regs, const u8 prefix, const u8 *operand,
- u8 *size);
-extern OPERATING_MODE get_operating_mode (struct vmcb_struct *vmcb);
-extern unsigned int decode_dest_reg(u8 prefix, u8 modrm);
-extern unsigned int decode_src_reg(u8 prefix, u8 modrm);
-extern unsigned long svm_rip2pointer(struct vcpu *v);
-extern int __get_instruction_length_from_list(struct vcpu *v,
- enum instruction_index *list, unsigned int list_count,
- u8 *guest_eip_buf, enum instruction_index *match);
-
+int __get_instruction_length_from_list(
+ struct vcpu *v,
+ enum instruction_index *list, unsigned int list_count,
+ u8 *guest_eip_buf, enum instruction_index *match);
static inline int __get_instruction_length(struct vcpu *v,
enum instruction_index instr, u8 *guest_eip_buf)
{
return __get_instruction_length_from_list(
v, &instr, 1, guest_eip_buf, NULL);
-}
-
-
-static inline unsigned int is_prefix(u8 opc)
-{
- switch ( opc ) {
- case 0x66:
- case 0x67:
- case 0x2E:
- case 0x3E:
- case 0x26:
- case 0x64:
- case 0x65:
- case 0x36:
- case 0xF0:
- case 0xF3:
- case 0xF2:
-#if __x86_64__
- case 0x40 ... 0x4f:
-#endif /* __x86_64__ */
- return 1;
- }
- return 0;
-}
-
-
-static inline int skip_prefix_bytes(u8 *buf, size_t size)
-{
- int index;
- for ( index = 0; index < size && is_prefix(buf[index]); index++ )
- continue;
- return index;
}
#endif /* __ASM_X86_HVM_SVM_EMULATE_H__ */
diff -r 591cfd37bd54 -r 09b53f27a18b xen/include/asm-x86/x86_emulate.h
--- a/xen/include/asm-x86/x86_emulate.h Thu Feb 21 15:06:37 2008 +0000
+++ b/xen/include/asm-x86/x86_emulate.h Thu Feb 21 18:02:42 2008 +0000
@@ -354,6 +354,12 @@ struct x86_emulate_ops
/* load_fpu_ctxt: Load emulated environment's FPU state onto processor. */
void (*load_fpu_ctxt)(
struct x86_emulate_ctxt *ctxt);
+
+ /* invlpg: Invalidate paging structures which map addressed byte. */
+ int (*invlpg)(
+ enum x86_segment seg,
+ unsigned long offset,
+ struct x86_emulate_ctxt *ctxt);
};
struct cpu_user_regs;
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