From 6c930268bcc4cef62194daf151097d2b94f67718 Mon Sep 17 00:00:00 2001 From: Andrew Jones Date: Tue, 18 Sep 2018 19:54:24 +0200 Subject: 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 Signed-off-by: Paolo Bonzini --- tools/testing/selftests/kvm/lib/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/testing/selftests/kvm') 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); -- cgit v1.2.3-59-g8ed1b