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| author | Zhiquan Li <zhiquan_li@163.com> | 2026-02-12 13:38:38 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-03-03 00:16:19 +0300 |
| commit | 0c96c47d4345084f543f2fe60ab031507b9a1b2f (patch) | |
| tree | 298bbf64751b2ba76e82fe2e21a8413496a00f9a /tools/testing | |
| parent | 11439c4635edd669ae435eec308f4ab8a0804808 (diff) | |
| download | linux-0c96c47d4345084f543f2fe60ab031507b9a1b2f.tar.xz | |
KVM: selftests: Add CPU vendor detection for Hygon
Currently some KVM selftests are failed on Hygon CPUs due to missing
vendor detection and edge-case handling specific to Hygon's
architecture.
Add CPU vendor detection for Hygon and add a global variable
"host_cpu_is_hygon" as the basic facility for the following fixes.
Signed-off-by: Zhiquan Li <zhiquan_li@163.com>
Link: https://patch.msgid.link/20260212103841.171459-2-zhiquan_li@163.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86/processor.h | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/lib/x86/processor.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h index 4ebae4269e68..1338de7111e7 100644 --- a/tools/testing/selftests/kvm/include/x86/processor.h +++ b/tools/testing/selftests/kvm/include/x86/processor.h @@ -21,6 +21,7 @@ extern bool host_cpu_is_intel; extern bool host_cpu_is_amd; +extern bool host_cpu_is_hygon; extern uint64_t guest_tsc_khz; #ifndef MAX_NR_CPUID_ENTRIES @@ -694,6 +695,11 @@ static inline bool this_cpu_is_amd(void) return this_cpu_vendor_string_is("AuthenticAMD"); } +static inline bool this_cpu_is_hygon(void) +{ + return this_cpu_vendor_string_is("HygonGenuine"); +} + static inline uint32_t __this_cpu_has(uint32_t function, uint32_t index, uint8_t reg, uint8_t lo, uint8_t hi) { diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c index fab18e9be66c..f6b1c5324931 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -23,6 +23,7 @@ vm_vaddr_t exception_handlers; bool host_cpu_is_amd; bool host_cpu_is_intel; +bool host_cpu_is_hygon; bool is_forced_emulation_enabled; uint64_t guest_tsc_khz; @@ -792,6 +793,7 @@ void kvm_arch_vm_post_create(struct kvm_vm *vm, unsigned int nr_vcpus) sync_global_to_guest(vm, host_cpu_is_intel); sync_global_to_guest(vm, host_cpu_is_amd); + sync_global_to_guest(vm, host_cpu_is_hygon); sync_global_to_guest(vm, is_forced_emulation_enabled); sync_global_to_guest(vm, pmu_errata_mask); @@ -1424,6 +1426,7 @@ void kvm_selftest_arch_init(void) { host_cpu_is_intel = this_cpu_is_intel(); host_cpu_is_amd = this_cpu_is_amd(); + host_cpu_is_hygon = this_cpu_is_hygon(); is_forced_emulation_enabled = kvm_is_forced_emulation_enabled(); kvm_init_pmu_errata(); |