On Tue, Aug 26, 2025, Binbin Wu wrote:
On 8/21/2025 12:28 PM, Sagi Shahar wrote:
TDX can't set sregs values directly using KVM_SET_SREGS. Expose the default values of certain sregs used by TDX VMs so they can be set manually.
Signed-off-by: Sagi Shahar sagis@google.com
.../selftests/kvm/include/x86/processor.h | 6 +++ .../testing/selftests/kvm/lib/x86/processor.c | 41 +++++++++++++++---- 2 files changed, 40 insertions(+), 7 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h index 2efb05c2f2fb..5c16507f9b2d 100644 --- a/tools/testing/selftests/kvm/include/x86/processor.h +++ b/tools/testing/selftests/kvm/include/x86/processor.h @@ -1026,6 +1026,12 @@ static inline struct kvm_cpuid2 *allocate_kvm_cpuid2(int nr_entries) void vcpu_init_cpuid(struct kvm_vcpu *vcpu, const struct kvm_cpuid2 *cpuid); +uint16_t kvm_get_default_idt_limit(void); +uint16_t kvm_get_default_gdt_limit(void); +uint64_t kvm_get_default_cr0(void); +uint64_t kvm_get_default_cr4(void); +uint64_t kvm_get_default_efer(void);
Can these be defined in the header file as static inline?
Yes please. Performance isn't a concern, but as a developer, it's nice to not have to bounce to a definition to find such simple information.