According to section "TLB Flush" in APM vol 2,
"Support for TLB_CONTROL commands other than the first two, is
optional and is indicated by CPUID Fn8000_000A_EDX[FlushByAsid].
All encodings of TLB_CONTROL not defined in the APM are reserved."
Patch# 1: Exposes FLUSHBYASID CPUID feature to nestsed guests.
Patch# 2: Adds KVM checks for ptional commands and reserved encodings of
TLB_CONTROL.
Patch# 3: Adds #defines for valid encodings of TLB_CONTROL.
Patch# 4: Adds #define for FLUSHBYASID CPUID bit.
Patch# 5: Adds kvm-unit-tests for optional commands and reserved encodings
of TLB_CONTROL.
[PATCH 1/5] nSVM: Expose FLUSHBYASID CPUID feature to nested guests
[PATCH 2/5] nSVM: Check for optional commands and reserved encodings of
[TEST PATCH 3/5] SVM: Add #defines for valid encodings of TLB_CONTROL VMCB
[TEST PATCH 4/5] X86: Add #define for FLUSHBYASID CPUID bit
[TEST PATCH 5/5] nSVM: Test optional commands and reserved encodings of TLB_CONTROL in nested VMCB
arch/x86/kvm/svm/nested.c | 19 +++++++++++++++++++
arch/x86/kvm/svm/svm.c | 3 +++
2 files changed, 22 insertions(+)
Krish Sadhukhan (2):
nSVM: Expose FLUSHBYASID CPUID feature to nested guests
nSVM: Check for optional commands and reserved encodings of TLB_CONTROL in nested VMCB
lib/x86/processor.h | 1 +
x86/svm.h | 5 +++++
x86/svm_tests.c | 36 ++++++++++++++++++++++++++++++++++++
3 files changed, 42 insertions(+)
Krish Sadhukhan (3):
SVM: Add #defines for valid encodings of TLB_CONTROL VMCB field
X86: Add #define for FLUSHBYASID CPUID bit
nSVM: Test optional commands and reserved encodings of TLB_CONTROL in nested VMCB
