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authorPaolo Bonzini <pbonzini@redhat.com>2021-10-18 06:49:18 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2021-10-18 14:07:19 -0400
commit9f1ee7b169afbd10c3ad254220d1b37beb5798aa (patch)
treeca9ef775f5f75f4a5aacc568e9ee2c1309ab3e4f /arch
parentd61863c66f9b443192997613cd6aeca3f65cc313 (diff)
KVM: SEV-ES: reduce ghcb_sa_len to 32 bits
The size of the GHCB scratch area is limited to 16 KiB (GHCB_SCRATCH_AREA_LIMIT), so there is no need for it to be a u64. This fixes a build error on 32-bit systems: i686-linux-gnu-ld: arch/x86/kvm/svm/sev.o: in function `sev_es_string_io: sev.c:(.text+0x110f): undefined reference to `__udivdi3' Cc: stable@vger.kernel.org Fixes: 019057bd73d1 ("KVM: SEV-ES: fix length of string I/O") Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/svm/svm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 128a54b1fbf1..5d30db599e10 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -191,7 +191,7 @@ struct vcpu_svm {
/* SEV-ES scratch area support */
void *ghcb_sa;
- u64 ghcb_sa_len;
+ u32 ghcb_sa_len;
bool ghcb_sa_sync;
bool ghcb_sa_free;