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Subject[tip: x86/seves] x86/sev-es: Handle INVD Events
The following commit has been merged into the x86/seves branch of tip:

Commit-ID: 8b4ce83707cb2cff5f6d175ea38f751ac4456096
Gitweb: https://git.kernel.org/tip/8b4ce83707cb2cff5f6d175ea38f751ac4456096
Author: Tom Lendacky <thomas.lendacky@amd.com>
AuthorDate: Mon, 07 Sep 2020 15:15:57 +02:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Wed, 09 Sep 2020 11:33:20 +02:00

x86/sev-es: Handle INVD Events

Implement a handler for #VC exceptions caused by INVD instructions.
Since Linux should never use INVD, just mark it as unsupported.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to #VC handling infrastructure ]
Co-developed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-57-joro@8bytes.org
---
arch/x86/kernel/sev-es.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
index b2d7287..236cfc1 100644
--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -892,6 +892,10 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
case SVM_EXIT_RDPMC:
result = vc_handle_rdpmc(ghcb, ctxt);
break;
+ case SVM_EXIT_INVD:
+ pr_err_ratelimited("#VC exception for INVD??? Seriously???\n");
+ result = ES_UNSUPPORTED;
+ break;
case SVM_EXIT_CPUID:
result = vc_handle_cpuid(ghcb, ctxt);
break;
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