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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] SVM patch to cleanup guest event injection logic, remove unnecessary
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID b4361ae1aabc2a6bbc65c9d9bdc9843915b2eb09
# Parent 3d85f350a66a006fd5df2c228cfd8b75e3240984
SVM patch to cleanup guest event injection logic, remove unnecessary
event_injecting variable.
Signed-off-by: Tom Woller <thomas.woller@xxxxxxx>
---
xen/arch/x86/hvm/svm/intr.c | 17 +++--------------
xen/arch/x86/hvm/svm/svm.c | 34 ++++++++++++++++------------------
xen/arch/x86/hvm/svm/vmcb.c | 1 -
xen/include/asm-x86/hvm/svm/vmcb.h | 1 -
4 files changed, 19 insertions(+), 34 deletions(-)
diff -r 3d85f350a66a -r b4361ae1aabc xen/arch/x86/hvm/svm/intr.c
--- a/xen/arch/x86/hvm/svm/intr.c Wed May 17 23:51:39 2006 +0100
+++ b/xen/arch/x86/hvm/svm/intr.c Wed May 17 23:53:01 2006 +0100
@@ -132,17 +132,13 @@ asmlinkage void svm_intr_assist(void)
ASSERT(vmcb);
/* Check if an Injection is active */
- if (v->arch.hvm_svm.injecting_event) {
/* Previous Interrupt delivery caused this Intercept? */
if (vmcb->exitintinfo.fields.v && (vmcb->exitintinfo.fields.type == 0))
{
v->arch.hvm_svm.saved_irq_vector = vmcb->exitintinfo.fields.vector;
// printk("Injecting PF#: saving IRQ from ExitInfo\n");
vmcb->exitintinfo.bytes = 0;
-
- /* bail out, we won't be injecting an interrupt this time */
- return;
+ re_injecting = 1;
}
- }
/* Guest's interrputs masked? */
rflags = vmcb->rflags;
@@ -151,16 +147,9 @@ asmlinkage void svm_intr_assist(void)
/* bail out, we won't be injecting an interrupt this time */
return;
}
-
- /* Interrupt delivery caused an Intercept? */
- if (vmcb->exitintinfo.fields.v && (vmcb->exitintinfo.fields.type == 0)) {
-// printk("Re-injecting IRQ from ExitInfo\n");
- intr_vector = vmcb->exitintinfo.fields.vector;
- vmcb->exitintinfo.bytes = 0;
- re_injecting = 1;
- }
+
/* Previous interrupt still pending? */
- else if (vmcb->vintr.fields.irq) {
+ if (vmcb->vintr.fields.irq) {
// printk("Re-injecting IRQ from Vintr\n");
intr_vector = vmcb->vintr.fields.vector;
vmcb->vintr.bytes = 0;
diff -r 3d85f350a66a -r b4361ae1aabc xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c Wed May 17 23:51:39 2006 +0100
+++ b/xen/arch/x86/hvm/svm/svm.c Wed May 17 23:53:01 2006 +0100
@@ -170,10 +170,10 @@ void asidpool_retire( struct vmcb_struct
spin_unlock(&ASIDpool[core].asid_lock);
}
-static inline void svm_inject_exception(struct vmcb_struct *vmcb,
- int trap, int ev, int error_code)
+static inline void svm_inject_exception(struct vcpu *v, int trap, int ev, int
error_code)
{
eventinj_t event;
+ struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
event.bytes = 0;
event.fields.v = 1;
@@ -329,7 +329,7 @@ static inline int long_mode_do_msr_write
if ( msr_content & ~(EFER_LME | EFER_LMA | EFER_NX | EFER_SCE) )
{
printk("trying to set reserved bit in EFER\n");
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(vc, TRAP_gp_fault, 1, 0);
return 0;
}
@@ -343,7 +343,7 @@ static inline int long_mode_do_msr_write
{
printk("trying to set LME bit when "
"in paging mode or PAE bit is not set\n");
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(vc, TRAP_gp_fault, 1, 0);
return 0;
}
set_bit(SVM_CPU_STATE_LME_ENABLED, &vc->arch.hvm_svm.cpu_state);
@@ -367,7 +367,7 @@ static inline int long_mode_do_msr_write
if (!IS_CANO_ADDRESS(msr_content))
{
HVM_DBG_LOG(DBG_LEVEL_1, "Not cano address of msr write\n");
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(vc, TRAP_gp_fault, 1, 0);
}
if (regs->ecx == MSR_FS_BASE)
@@ -900,7 +900,7 @@ static void svm_do_general_protection_fa
/* Reflect it back into the guest */
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, error_code);
+ svm_inject_exception(v, TRAP_gp_fault, 1, error_code);
}
/* Reserved bits: [31:14], [12:1] */
@@ -1191,7 +1191,7 @@ static void svm_get_prefix_info(struct v
/* Get the address of INS/OUTS instruction */
-static inline int svm_get_io_address(struct vmcb_struct *vmcb,
+static inline int svm_get_io_address(struct vcpu *v,
struct cpu_user_regs *regs, unsigned int dir,
unsigned long *count, unsigned long *addr)
{
@@ -1201,6 +1201,7 @@ static inline int svm_get_io_address(str
int long_mode;
ioio_info_t info;
segment_selector_t *seg = NULL;
+ struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
info.bytes = vmcb->exitinfo1;
@@ -1244,7 +1245,7 @@ static inline int svm_get_io_address(str
/* If the segment isn't present, give GP fault! */
if (!long_mode && !seg->attributes.fields.p)
{
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, seg->sel);
+ svm_inject_exception(v, TRAP_gp_fault, 1, seg->sel);
return 0;
}
@@ -1262,7 +1263,7 @@ static inline int svm_get_io_address(str
if (!long_mode) {
if (*addr > seg->limit)
{
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, seg->sel);
+ svm_inject_exception(v, TRAP_gp_fault, 1, seg->sel);
return 0;
}
else
@@ -1310,7 +1311,7 @@ static void svm_io_instruction(struct vc
unsigned long addr, count;
int sign = regs->eflags & EF_DF ? -1 : 1;
- if (!svm_get_io_address(vmcb, regs, dir, &count, &addr))
+ if (!svm_get_io_address(v, regs, dir, &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
@@ -1415,7 +1416,7 @@ static int svm_set_cr0(unsigned long val
&v->arch.hvm_svm.cpu_state))
{
HVM_DBG_LOG(DBG_LEVEL_1, "Enable paging before PAE enable\n");
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(v, TRAP_gp_fault, 1, 0);
}
if (test_bit(SVM_CPU_STATE_LME_ENABLED, &v->arch.hvm_svm.cpu_state))
@@ -1489,7 +1490,7 @@ static int svm_set_cr0(unsigned long val
*/
if ((value & X86_CR0_PE) == 0) {
if (value & X86_CR0_PG) {
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(v, TRAP_gp_fault, 1, 0);
return 0;
}
@@ -1736,7 +1737,7 @@ static int mov_to_cr(int gpreg, int cr,
} else {
if (test_bit(SVM_CPU_STATE_LMA_ENABLED,
&v->arch.hvm_svm.cpu_state)) {
- svm_inject_exception(vmcb, TRAP_gp_fault, 1, 0);
+ svm_inject_exception(v, TRAP_gp_fault, 1, 0);
}
clear_bit(SVM_CPU_STATE_PAE_ENABLED, &v->arch.hvm_svm.cpu_state);
}
@@ -2504,7 +2505,6 @@ asmlinkage void svm_vmexit_handler(struc
exit_reason = vmcb->exitcode;
save_svm_cpu_user_regs(v, ®s);
- v->arch.hvm_svm.injecting_event = 0;
vmcb->tlb_control = 1;
@@ -2668,7 +2668,7 @@ asmlinkage void svm_vmexit_handler(struc
if ( test_bit(_DOMF_debugging, &v->domain->domain_flags) )
domain_pause_for_debugger();
else
- svm_inject_exception(vmcb, TRAP_int3, 0, 0);
+ svm_inject_exception(v, TRAP_int3, 0, 0);
#endif
break;
@@ -2679,7 +2679,6 @@ asmlinkage void svm_vmexit_handler(struc
case VMEXIT_EXCEPTION_GP:
/* This should probably not be trapped in the future */
regs.error_code = vmcb->exitinfo1;
- v->arch.hvm_svm.injecting_event = 1;
svm_do_general_protection_fault(v, ®s);
break;
@@ -2699,9 +2698,8 @@ asmlinkage void svm_vmexit_handler(struc
//printk("PF1\n");
if (!(error = svm_do_page_fault(va, ®s)))
{
- v->arch.hvm_svm.injecting_event = 1;
/* Inject #PG using Interruption-Information Fields */
- svm_inject_exception(vmcb, TRAP_page_fault, 1, regs.error_code);
+ svm_inject_exception(v, TRAP_page_fault, 1, regs.error_code);
v->arch.hvm_svm.cpu_cr2 = va;
vmcb->cr2 = va;
diff -r 3d85f350a66a -r b4361ae1aabc xen/arch/x86/hvm/svm/vmcb.c
--- a/xen/arch/x86/hvm/svm/vmcb.c Wed May 17 23:51:39 2006 +0100
+++ b/xen/arch/x86/hvm/svm/vmcb.c Wed May 17 23:53:01 2006 +0100
@@ -417,7 +417,6 @@ void svm_do_launch(struct vcpu *v)
v->arch.schedule_tail = arch_svm_do_resume;
- v->arch.hvm_svm.injecting_event = 0;
v->arch.hvm_svm.saved_irq_vector = -1;
svm_set_guest_time(v, 0);
diff -r 3d85f350a66a -r b4361ae1aabc xen/include/asm-x86/hvm/svm/vmcb.h
--- a/xen/include/asm-x86/hvm/svm/vmcb.h Wed May 17 23:51:39 2006 +0100
+++ b/xen/include/asm-x86/hvm/svm/vmcb.h Wed May 17 23:53:01 2006 +0100
@@ -440,7 +440,6 @@ struct arch_svm_struct {
u32 *iopm;
u32 *msrpm;
u64 vmexit_tsc; /* tsc read at #VMEXIT. for TSC_OFFSET */
- int injecting_event;
int saved_irq_vector;
u32 launch_core;
u32 asid_core;
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