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[RFC,08/31] KVM: selftests: Make GHCB entry page size aligned

Message ID 20250228093024.114983-9-Neeraj.Upadhyay@amd.com
State New
Headers show
Series AMD: Add Secure AVIC KVM selftests | expand

Commit Message

Neeraj Upadhyay Feb. 28, 2025, 9:30 a.m. UTC 
Make GHCB entry page size aligned. Without this change
GHCB GPA registration gets incorrectly interpreted in
host as a GHCB MSR protocol request.

Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
---
 tools/testing/selftests/kvm/lib/x86/sev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/tools/testing/selftests/kvm/lib/x86/sev.c b/tools/testing/selftests/kvm/lib/x86/sev.c
index 228c446072a8..38813f60c252 100644
--- a/tools/testing/selftests/kvm/lib/x86/sev.c
+++ b/tools/testing/selftests/kvm/lib/x86/sev.c
@@ -22,7 +22,7 @@  struct ghcb_entry {
 
 	/* Host virtual address of this struct. */
 	struct ghcb_entry *hva;
-};
+} __attribute__((__aligned__(PAGE_SIZE)));
 
 struct ghcb_header {
 	struct ghcb_entry ghcbs[KVM_MAX_VCPUS];