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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen staging] x86: Consolidate the storage of MSR_AMD64_DR{0-3}_ADDRESS_MASK
commit 96f235c26f8ee346f2ca7c2576ec6e314a49d833
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Oct 19 16:14:22 2018 +0100
Commit: Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Thu Nov 1 10:15:10 2018 +0000
x86: Consolidate the storage of MSR_AMD64_DR{0-3}_ADDRESS_MASK
The PV and HVM code both have a copy of these, which gives the false
impression in the context switch code that they are PV/HVM specific.
Move the storage into struct vcpu_msrs, and update all users to match.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
xen/arch/x86/domctl.c | 12 ++++++------
xen/arch/x86/hvm/svm/svm.c | 36 ++++++++++++++++++------------------
xen/arch/x86/pv/emul-priv-op.c | 8 ++++----
xen/arch/x86/traps.c | 8 ++++----
xen/include/asm-x86/domain.h | 3 ---
xen/include/asm-x86/hvm/svm/vmcb.h | 3 ---
xen/include/asm-x86/msr.h | 6 ++++++
7 files changed, 38 insertions(+), 38 deletions(-)
diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index cc85395e96..f79827e6e4 100644
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -1328,12 +1328,12 @@ long arch_do_domctl(
if ( boot_cpu_has(X86_FEATURE_DBEXT) )
{
- if ( v->arch.pv.dr_mask[0] )
+ if ( v->arch.msrs->dr_mask[0] )
{
if ( i < vmsrs->msr_count && !ret )
{
msr.index = MSR_AMD64_DR0_ADDRESS_MASK;
- msr.value = v->arch.pv.dr_mask[0];
+ msr.value = v->arch.msrs->dr_mask[0];
if ( copy_to_guest_offset(vmsrs->msrs, i, &msr, 1)
)
ret = -EFAULT;
}
@@ -1342,12 +1342,12 @@ long arch_do_domctl(
for ( j = 0; j < 3; ++j )
{
- if ( !v->arch.pv.dr_mask[1 + j] )
+ if ( !v->arch.msrs->dr_mask[1 + j] )
continue;
if ( i < vmsrs->msr_count && !ret )
{
msr.index = MSR_AMD64_DR1_ADDRESS_MASK + j;
- msr.value = v->arch.pv.dr_mask[1 + j];
+ msr.value = v->arch.msrs->dr_mask[1 + j];
if ( copy_to_guest_offset(vmsrs->msrs, i, &msr, 1)
)
ret = -EFAULT;
}
@@ -1392,7 +1392,7 @@ long arch_do_domctl(
if ( !boot_cpu_has(X86_FEATURE_DBEXT) ||
(msr.value >> 32) )
break;
- v->arch.pv.dr_mask[0] = msr.value;
+ v->arch.msrs->dr_mask[0] = msr.value;
continue;
case MSR_AMD64_DR1_ADDRESS_MASK ...
@@ -1401,7 +1401,7 @@ long arch_do_domctl(
(msr.value >> 32) )
break;
msr.index -= MSR_AMD64_DR1_ADDRESS_MASK - 1;
- v->arch.pv.dr_mask[msr.index] = msr.value;
+ v->arch.msrs->dr_mask[msr.index] = msr.value;
continue;
}
break;
diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c
index 41427e7b9b..be48ca72c5 100644
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -210,10 +210,10 @@ static void svm_save_dr(struct vcpu *v)
svm_intercept_msr(v, MSR_AMD64_DR2_ADDRESS_MASK, MSR_INTERCEPT_RW);
svm_intercept_msr(v, MSR_AMD64_DR3_ADDRESS_MASK, MSR_INTERCEPT_RW);
- rdmsrl(MSR_AMD64_DR0_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[0]);
- rdmsrl(MSR_AMD64_DR1_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[1]);
- rdmsrl(MSR_AMD64_DR2_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[2]);
- rdmsrl(MSR_AMD64_DR3_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[3]);
+ rdmsrl(MSR_AMD64_DR0_ADDRESS_MASK, v->arch.msrs->dr_mask[0]);
+ rdmsrl(MSR_AMD64_DR1_ADDRESS_MASK, v->arch.msrs->dr_mask[1]);
+ rdmsrl(MSR_AMD64_DR2_ADDRESS_MASK, v->arch.msrs->dr_mask[2]);
+ rdmsrl(MSR_AMD64_DR3_ADDRESS_MASK, v->arch.msrs->dr_mask[3]);
}
v->arch.dr[0] = read_debugreg(0);
@@ -241,10 +241,10 @@ static void __restore_debug_registers(struct vmcb_struct
*vmcb, struct vcpu *v)
svm_intercept_msr(v, MSR_AMD64_DR2_ADDRESS_MASK, MSR_INTERCEPT_NONE);
svm_intercept_msr(v, MSR_AMD64_DR3_ADDRESS_MASK, MSR_INTERCEPT_NONE);
- wrmsrl(MSR_AMD64_DR0_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[0]);
- wrmsrl(MSR_AMD64_DR1_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[1]);
- wrmsrl(MSR_AMD64_DR2_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[2]);
- wrmsrl(MSR_AMD64_DR3_ADDRESS_MASK, v->arch.hvm.svm.dr_mask[3]);
+ wrmsrl(MSR_AMD64_DR0_ADDRESS_MASK, v->arch.msrs->dr_mask[0]);
+ wrmsrl(MSR_AMD64_DR1_ADDRESS_MASK, v->arch.msrs->dr_mask[1]);
+ wrmsrl(MSR_AMD64_DR2_ADDRESS_MASK, v->arch.msrs->dr_mask[2]);
+ wrmsrl(MSR_AMD64_DR3_ADDRESS_MASK, v->arch.msrs->dr_mask[3]);
}
write_debugreg(0, v->arch.dr[0]);
@@ -422,19 +422,19 @@ static void svm_save_msr(struct vcpu *v, struct hvm_msr
*ctxt)
{
if ( boot_cpu_has(X86_FEATURE_DBEXT) )
{
- ctxt->msr[ctxt->count].val = v->arch.hvm.svm.dr_mask[0];
+ ctxt->msr[ctxt->count].val = v->arch.msrs->dr_mask[0];
if ( ctxt->msr[ctxt->count].val )
ctxt->msr[ctxt->count++].index = MSR_AMD64_DR0_ADDRESS_MASK;
- ctxt->msr[ctxt->count].val = v->arch.hvm.svm.dr_mask[1];
+ ctxt->msr[ctxt->count].val = v->arch.msrs->dr_mask[1];
if ( ctxt->msr[ctxt->count].val )
ctxt->msr[ctxt->count++].index = MSR_AMD64_DR1_ADDRESS_MASK;
- ctxt->msr[ctxt->count].val = v->arch.hvm.svm.dr_mask[2];
+ ctxt->msr[ctxt->count].val = v->arch.msrs->dr_mask[2];
if ( ctxt->msr[ctxt->count].val )
ctxt->msr[ctxt->count++].index = MSR_AMD64_DR2_ADDRESS_MASK;
- ctxt->msr[ctxt->count].val = v->arch.hvm.svm.dr_mask[3];
+ ctxt->msr[ctxt->count].val = v->arch.msrs->dr_mask[3];
if ( ctxt->msr[ctxt->count].val )
ctxt->msr[ctxt->count++].index = MSR_AMD64_DR3_ADDRESS_MASK;
}
@@ -455,7 +455,7 @@ static int svm_load_msr(struct vcpu *v, struct hvm_msr
*ctxt)
else if ( ctxt->msr[i].val >> 32 )
err = -EDOM;
else
- v->arch.hvm.svm.dr_mask[0] = ctxt->msr[i].val;
+ v->arch.msrs->dr_mask[0] = ctxt->msr[i].val;
break;
case MSR_AMD64_DR1_ADDRESS_MASK ... MSR_AMD64_DR3_ADDRESS_MASK:
@@ -464,7 +464,7 @@ static int svm_load_msr(struct vcpu *v, struct hvm_msr
*ctxt)
else if ( ctxt->msr[i].val >> 32 )
err = -EDOM;
else
- v->arch.hvm.svm.dr_mask[idx - MSR_AMD64_DR1_ADDRESS_MASK + 1] =
+ v->arch.msrs->dr_mask[idx - MSR_AMD64_DR1_ADDRESS_MASK + 1] =
ctxt->msr[i].val;
break;
@@ -2079,14 +2079,14 @@ static int svm_msr_read_intercept(unsigned int msr,
uint64_t *msr_content)
case MSR_AMD64_DR0_ADDRESS_MASK:
if ( !v->domain->arch.cpuid->extd.dbext )
goto gpf;
- *msr_content = v->arch.hvm.svm.dr_mask[0];
+ *msr_content = v->arch.msrs->dr_mask[0];
break;
case MSR_AMD64_DR1_ADDRESS_MASK ... MSR_AMD64_DR3_ADDRESS_MASK:
if ( !v->domain->arch.cpuid->extd.dbext )
goto gpf;
*msr_content =
- v->arch.hvm.svm.dr_mask[msr - MSR_AMD64_DR1_ADDRESS_MASK + 1];
+ v->arch.msrs->dr_mask[msr - MSR_AMD64_DR1_ADDRESS_MASK + 1];
break;
case MSR_AMD_OSVW_ID_LENGTH:
@@ -2277,13 +2277,13 @@ static int svm_msr_write_intercept(unsigned int msr,
uint64_t msr_content)
case MSR_AMD64_DR0_ADDRESS_MASK:
if ( !v->domain->arch.cpuid->extd.dbext || (msr_content >> 32) )
goto gpf;
- v->arch.hvm.svm.dr_mask[0] = msr_content;
+ v->arch.msrs->dr_mask[0] = msr_content;
break;
case MSR_AMD64_DR1_ADDRESS_MASK ... MSR_AMD64_DR3_ADDRESS_MASK:
if ( !v->domain->arch.cpuid->extd.dbext || (msr_content >> 32) )
goto gpf;
- v->arch.hvm.svm.dr_mask[msr - MSR_AMD64_DR1_ADDRESS_MASK + 1] =
+ v->arch.msrs->dr_mask[msr - MSR_AMD64_DR1_ADDRESS_MASK + 1] =
msr_content;
break;
diff --git a/xen/arch/x86/pv/emul-priv-op.c b/xen/arch/x86/pv/emul-priv-op.c
index aecf517cf0..f73ea4a163 100644
--- a/xen/arch/x86/pv/emul-priv-op.c
+++ b/xen/arch/x86/pv/emul-priv-op.c
@@ -916,13 +916,13 @@ static int read_msr(unsigned int reg, uint64_t *val,
case MSR_AMD64_DR0_ADDRESS_MASK:
if ( !boot_cpu_has(X86_FEATURE_DBEXT) )
break;
- *val = curr->arch.pv.dr_mask[0];
+ *val = curr->arch.msrs->dr_mask[0];
return X86EMUL_OKAY;
case MSR_AMD64_DR1_ADDRESS_MASK ... MSR_AMD64_DR3_ADDRESS_MASK:
if ( !boot_cpu_has(X86_FEATURE_DBEXT) )
break;
- *val = curr->arch.pv.dr_mask[reg - MSR_AMD64_DR1_ADDRESS_MASK + 1];
+ *val = curr->arch.msrs->dr_mask[reg - MSR_AMD64_DR1_ADDRESS_MASK + 1];
return X86EMUL_OKAY;
case MSR_IA32_PERF_CAPABILITIES:
@@ -1110,7 +1110,7 @@ static int write_msr(unsigned int reg, uint64_t val,
case MSR_AMD64_DR0_ADDRESS_MASK:
if ( !boot_cpu_has(X86_FEATURE_DBEXT) || (val >> 32) )
break;
- curr->arch.pv.dr_mask[0] = val;
+ curr->arch.msrs->dr_mask[0] = val;
if ( curr->arch.dr7 & DR7_ACTIVE_MASK )
wrmsrl(MSR_AMD64_DR0_ADDRESS_MASK, val);
return X86EMUL_OKAY;
@@ -1118,7 +1118,7 @@ static int write_msr(unsigned int reg, uint64_t val,
case MSR_AMD64_DR1_ADDRESS_MASK ... MSR_AMD64_DR3_ADDRESS_MASK:
if ( !boot_cpu_has(X86_FEATURE_DBEXT) || (val >> 32) )
break;
- curr->arch.pv.dr_mask[reg - MSR_AMD64_DR1_ADDRESS_MASK + 1] = val;
+ curr->arch.msrs->dr_mask[reg - MSR_AMD64_DR1_ADDRESS_MASK + 1] = val;
if ( curr->arch.dr7 & DR7_ACTIVE_MASK )
wrmsrl(reg, val);
return X86EMUL_OKAY;
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 9b532199a8..c60c8f5c2a 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -2071,10 +2071,10 @@ void activate_debugregs(const struct vcpu *curr)
if ( boot_cpu_has(X86_FEATURE_DBEXT) )
{
- wrmsrl(MSR_AMD64_DR0_ADDRESS_MASK, curr->arch.pv.dr_mask[0]);
- wrmsrl(MSR_AMD64_DR1_ADDRESS_MASK, curr->arch.pv.dr_mask[1]);
- wrmsrl(MSR_AMD64_DR2_ADDRESS_MASK, curr->arch.pv.dr_mask[2]);
- wrmsrl(MSR_AMD64_DR3_ADDRESS_MASK, curr->arch.pv.dr_mask[3]);
+ wrmsrl(MSR_AMD64_DR0_ADDRESS_MASK, curr->arch.msrs->dr_mask[0]);
+ wrmsrl(MSR_AMD64_DR1_ADDRESS_MASK, curr->arch.msrs->dr_mask[1]);
+ wrmsrl(MSR_AMD64_DR2_ADDRESS_MASK, curr->arch.msrs->dr_mask[2]);
+ wrmsrl(MSR_AMD64_DR3_ADDRESS_MASK, curr->arch.msrs->dr_mask[3]);
}
}
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 1a88cac083..7214037820 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -553,9 +553,6 @@ struct pv_vcpu
*/
uint32_t dr7_emul;
- /* data breakpoint extension MSRs */
- uint32_t dr_mask[4];
-
/* Deferred VA-based update state. */
bool_t need_update_runstate_area;
struct vcpu_time_info pending_system_time;
diff --git a/xen/include/asm-x86/hvm/svm/vmcb.h
b/xen/include/asm-x86/hvm/svm/vmcb.h
index 48aed78292..70177059e7 100644
--- a/xen/include/asm-x86/hvm/svm/vmcb.h
+++ b/xen/include/asm-x86/hvm/svm/vmcb.h
@@ -538,9 +538,6 @@ struct svm_vcpu {
/* AMD lightweight profiling MSR */
uint64_t guest_lwp_cfg; /* guest version */
uint64_t cpu_lwp_cfg; /* CPU version */
-
- /* data breakpoint extension MSRs */
- uint32_t dr_mask[4];
};
struct vmcb_struct *alloc_vmcb(void);
diff --git a/xen/include/asm-x86/msr.h b/xen/include/asm-x86/msr.h
index 7a061b28e8..c1cb38fab3 100644
--- a/xen/include/asm-x86/msr.h
+++ b/xen/include/asm-x86/msr.h
@@ -287,6 +287,12 @@ struct vcpu_msrs
bool cpuid_faulting:1;
};
} misc_features_enables;
+
+ /*
+ * 0xc00110{27,19-1b} MSR_AMD64_DR{0-3}_ADDRESS_MASK
+ * TODO: Not yet handled by guest_{rd,wr}msr() infrastructure.
+ */
+ uint32_t dr_mask[4];
};
void init_guest_msr_policy(void);
--
generated by git-patchbot for /home/xen/git/xen.git#staging
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