x86/sev-es: Handle MMIO events

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Add a handler for #VC exceptions caused by MMIO intercepts. These
intercepts come along as nested page faults on pages with reserved
bits set.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to VC handling framework ]
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/20200907131613.12703-50-joro@8bytes.org

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Tom Lendacky 2020-09-07 15:15:50 +02:00 • committed by Borislav Petkov

parent 5e3427a7bc

commit 51ee7d6e3d

2 changed files with 227 additions and 0 deletions

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arch/x86/include/uapi/asm/svm.h

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222

arch/x86/kernel/sev-es.c

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