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| author |   Andrew Jones <drjones@redhat.com> | 2018-09-18 19:54:24 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2018-10-17 00:26:02 +0200 |
| commit | 6c930268bcc4cef62194daf151097d2b94f67718 (patch) | |
| tree | 22049c548e5af74ca3432bbe333da3e37cc05986 /tools/testing/selftests/kvm | |
| parent | KVM: LAPIC: Tune lapic_timer_advance_ns automatically (diff) | |
| download | linux-dev-6c930268bcc4cef62194daf151097d2b94f67718.tar.xz linux-dev-6c930268bcc4cef62194daf151097d2b94f67718.zip | |
kvm: selftests: vcpu_setup: set cr4.osfxsr
Guest code may want to call functions that have variable arguments.
To do so, we either need to compile with -mno-sse or enable SSE in
the VCPUs. As it should be pretty safe to turn on the feature, and
-mno-sse would make linking test code with standard libraries
difficult, we choose the feature enabling.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/x86.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86.c b/tools/testing/selftests/kvm/lib/x86.c index a3122f1949a8..bb6c65ebfa77 100644 --- a/tools/testing/selftests/kvm/lib/x86.c +++ b/tools/testing/selftests/kvm/lib/x86.c @@ -626,7 +626,7 @@ void vcpu_setup(struct kvm_vm *vm, int vcpuid, int pgd_memslot, int gdt_memslot) switch (vm->mode) { case VM_MODE_FLAT48PG: sregs.cr0 = X86_CR0_PE | X86_CR0_NE | X86_CR0_PG; - sregs.cr4 |= X86_CR4_PAE; + sregs.cr4 |= X86_CR4_PAE | X86_CR4_OSFXSR; sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); kvm_seg_set_unusable(&sregs.ldt); |