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(parent: d3529bb) | patch
x86/sev-es: Handle instruction fetches from user-space
authorJoerg Roedel <jroedel@suse.de>
Mon, 7 Sep 2020 13:15:49 +0000 (15:15 +0200)
committerBorislav Petkov <bp@suse.de>
Wed, 9 Sep 2020 09:33:19 +0000 (11:33 +0200)
commit5e3427a7bc432ed2e5de394ac30f160cc6c37a1f
tree41b1afdd929ab485a2fbc82f73ac7c2e8af4006btree | snapshot
parentd3529bb73f76d0ec8aafaca505226fa0971c1dc9commit | diff
x86/sev-es: Handle instruction fetches from user-space

When a #VC exception is triggered by user-space, the instruction decoder
needs to read the instruction bytes from user addresses. Enhance
vc_decode_insn() to safely fetch kernel and user instructions.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-49-joro@8bytes.org
arch/x86/kernel/sev-es.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)