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authorLinus Torvalds <torvalds@linux-foundation.org>2019-06-20 13:50:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-06-20 13:50:37 -0700
commitb3e978337b25b042aa653652a029e3d798814c12 (patch)
treef03c4b0b6d9eadb4cef3daa8c1f9920415cdcefe /tools/testing/selftests/kvm/lib/x86_64/processor.c
parente929387449cf631e96840296a01922be1ef3c832 (diff)
parentb21e31b253048b7f9768ca7cc270e67765fd6ba2 (diff)
downloadlinux-b3e978337b25b042aa653652a029e3d798814c12.tar.bz2
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini: "Fixes for ARM and x86, plus selftest patches and nicer structs for nested state save/restore" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: nVMX: reorganize initial steps of vmx_set_nested_state KVM: arm/arm64: Fix emulated ptimer irq injection tests: kvm: Check for a kernel warning kvm: tests: Sort tests in the Makefile alphabetically KVM: x86/mmu: Allocate PAE root array when using SVM's 32-bit NPT KVM: x86: Modify struct kvm_nested_state to have explicit fields for data KVM: fix typo in documentation KVM: nVMX: use correct clean fields when copying from eVMCS KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy KVM: arm64: Filter out invalid core register IDs in KVM_GET_REG_LIST KVM: arm64: Implement vq_present() as a macro
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/processor.c')
-rw-r--r--tools/testing/selftests/kvm/lib/x86_64/processor.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index 21f3040d90cb..2fe78bdf3bee 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -1137,3 +1137,19 @@ void vcpu_load_state(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_x86_state *s
r);
}
}
+
+bool is_intel_cpu(void)
+{
+ int eax, ebx, ecx, edx;
+ const uint32_t *chunk;
+ const int leaf = 0;
+
+ __asm__ __volatile__(
+ "cpuid"
+ : /* output */ "=a"(eax), "=b"(ebx),
+ "=c"(ecx), "=d"(edx)
+ : /* input */ "0"(leaf), "2"(0));
+
+ chunk = (const uint32_t *)("GenuineIntel");
+ return (ebx == chunk[0] && edx == chunk[1] && ecx == chunk[2]);
+}