| Message ID | 20211018105231.517041-1-pbonzini@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: SEV-ES: reduce ghcb_sa_len to 32 bits | expand |
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;
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> --- arch/x86/kvm/svm/svm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)