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@xxxxxxx> AuthorDate: Fri, 25 Sep 2020 08:38:26 -05:00 Committer: Borislav Petkov <bp@xxxxxxx> 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@xxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Reviewed-by: Joerg Roedel <jroedel@xxxxxxx> Link: https://lkml.kernel.org/r/ba84deabdf44a7a880454fb351d189c6ad79d4ba.1601041106.git.thomas.lendacky@xxxxxxx --- 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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