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authorPetr Mladek <pmladek@suse.com>2022-12-08 11:46:56 +0100
committerPetr Mladek <pmladek@suse.com>2022-12-08 11:46:56 +0100
commit6b2b0d839acaa84f05a77184370f793752e786e9 (patch)
treed051c2ca80acc8a442277410d23a2053685f8a85 /tools/testing/selftests/kvm/lib/x86_64/svm.c
parent7365df19e8ff7a031e1557616fc0b3aa6d794d7e (diff)
parent5074ffbec67ac592614901771d3a15e1198d759d (diff)
Merge branch 'rework/console-list-lock' into for-linus
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/svm.c')
-rw-r--r--tools/testing/selftests/kvm/lib/x86_64/svm.c14
1 files changed, 1 insertions, 13 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/svm.c b/tools/testing/selftests/kvm/lib/x86_64/svm.c
index 6d445886e16c..5495a92dfd5a 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/svm.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/svm.c
@@ -60,18 +60,6 @@ static void vmcb_set_seg(struct vmcb_seg *seg, u16 selector,
seg->base = base;
}
-/*
- * Avoid using memset to clear the vmcb, since libc may not be
- * available in L1 (and, even if it is, features that libc memset may
- * want to use, like AVX, may not be enabled).
- */
-static void clear_vmcb(struct vmcb *vmcb)
-{
- int n = sizeof(*vmcb) / sizeof(u32);
-
- asm volatile ("rep stosl" : "+c"(n), "+D"(vmcb) : "a"(0) : "memory");
-}
-
void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp)
{
struct vmcb *vmcb = svm->vmcb;
@@ -88,7 +76,7 @@ void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_r
wrmsr(MSR_EFER, efer | EFER_SVME);
wrmsr(MSR_VM_HSAVE_PA, svm->save_area_gpa);
- clear_vmcb(vmcb);
+ memset(vmcb, 0, sizeof(*vmcb));
asm volatile ("vmsave %0\n\t" : : "a" (vmcb_gpa) : "memory");
vmcb_set_seg(&save->es, get_es(), 0, -1U, data_seg_attr);
vmcb_set_seg(&save->cs, get_cs(), 0, -1U, code_seg_attr);