Commit 9f1ee7b1 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

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: 019057bd ("KVM: SEV-ES: fix length of string I/O")
Reported-by: default avatarNaresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d61863c6

arch/x86/kvm/svm/svm.h

+1 −1
Original line number Diff line number Diff line
@@ -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;