* [tip: x86/seves] x86/sev-es: Use GHCB accessor for setting the MMIO scratch buffer
@ 2020-09-25 15:24 tip-bot2 for Tom Lendacky
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From: tip-bot2 for Tom Lendacky @ 2020-09-25 15:24 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Tom Lendacky, Borislav Petkov, Joerg Roedel, x86, LKML
The following commit has been merged into the x86/seves branch of tip:
Commit-ID: 0ddfb1cf3b6b07c97cff16ea69931d986f9622ee
Gitweb: https://git.kernel.org/tip/0ddfb1cf3b6b07c97cff16ea69931d986f9622ee
Author: Tom Lendacky <thomas.lendacky@amd.com>
AuthorDate: Fri, 25 Sep 2020 08:38:26 -05:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Fri, 25 Sep 2020 17:12:41 +02:00
x86/sev-es: Use GHCB accessor for setting the MMIO scratch buffer
Use ghcb_set_sw_scratch() to set the GHCB scratch field, which will also
set the corresponding bit in the GHCB valid_bitmap field to denote that
sw_scratch is actually valid.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/ba84deabdf44a7a880454fb351d189c6ad79d4ba.1601041106.git.thomas.lendacky@amd.com
---
arch/x86/kernel/sev-es.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
index 6fcfdd3..4a96726 100644
--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -751,7 +751,7 @@ static enum es_result vc_do_mmio(struct ghcb *ghcb, struct es_em_ctxt *ctxt,
/* Can never be greater than 8 */
exit_info_2 = bytes;
- ghcb->save.sw_scratch = ghcb_pa + offsetof(struct ghcb, shared_buffer);
+ ghcb_set_sw_scratch(ghcb, ghcb_pa + offsetof(struct ghcb, shared_buffer));
return sev_es_ghcb_hv_call(ghcb, ctxt, exit_code, exit_info_1, exit_info_2);
}
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