[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH RFC v12 20/21] pvh: Disable memevents for PVH guests for now
To be implemented. Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx> Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> CC: Jan Beulich <jan.beulich@xxxxxxxx> CC: Tim Deegan <tim@xxxxxxx> CC: Keir Fraser <keir@xxxxxxx> --- xen/arch/x86/hvm/hvm.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index 8b87271..73a0c1e 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -3015,7 +3015,8 @@ int hvm_msr_write_intercept(unsigned int msr, uint64_t msr_content) hvm_cpuid(1, &cpuid[0], &cpuid[1], &cpuid[2], &cpuid[3]); mtrr = !!(cpuid[3] & cpufeat_mask(X86_FEATURE_MTRR)); - hvm_memory_event_msr(msr, msr_content); + if ( !is_pvh_vcpu(v) ) + hvm_memory_event_msr(msr, msr_content); switch ( msr ) { @@ -4601,8 +4602,11 @@ static int hvm_memory_event_traps(long p, uint32_t reason, return 1; } +/* PVH fixme: add support for monitoring guest behaviour in below functions. */ void hvm_memory_event_cr0(unsigned long value, unsigned long old) { + if ( is_pvh_vcpu(current) ) + return; hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_CR0], MEM_EVENT_REASON_CR0, @@ -4611,6 +4615,8 @@ void hvm_memory_event_cr0(unsigned long value, unsigned long old) void hvm_memory_event_cr3(unsigned long value, unsigned long old) { + if ( is_pvh_vcpu(current) ) + return; hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_CR3], MEM_EVENT_REASON_CR3, @@ -4619,6 +4625,8 @@ void hvm_memory_event_cr3(unsigned long value, unsigned long old) void hvm_memory_event_cr4(unsigned long value, unsigned long old) { + if ( is_pvh_vcpu(current) ) + return; hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_CR4], MEM_EVENT_REASON_CR4, @@ -4627,6 +4635,8 @@ void hvm_memory_event_cr4(unsigned long value, unsigned long old) void hvm_memory_event_msr(unsigned long msr, unsigned long value) { + if ( is_pvh_vcpu(current) ) + return; hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_MSR], MEM_EVENT_REASON_MSR, @@ -4639,6 +4649,8 @@ int hvm_memory_event_int3(unsigned long gla) unsigned long gfn; gfn = paging_gva_to_gfn(current, gla, &pfec); + if ( is_pvh_vcpu(current) ) + return 0; return hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_INT3], MEM_EVENT_REASON_INT3, @@ -4651,6 +4663,8 @@ int hvm_memory_event_single_step(unsigned long gla) unsigned long gfn; gfn = paging_gva_to_gfn(current, gla, &pfec); + if ( is_pvh_vcpu(current) ) + return 0; return hvm_memory_event_traps(current->domain->arch.hvm_domain .params[HVM_PARAM_MEMORY_EVENT_SINGLE_STEP], MEM_EVENT_REASON_SINGLESTEP, -- 1.7.9.5 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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