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(parent: c2b535c) | patch
x86/sev: Avoid using __x86_return_thunk
authorKim Phillips <kim.phillips@amd.com>
Tue, 14 Jun 2022 21:15:44 +0000 (23:15 +0200)
committerBorislav Petkov <bp@suse.de>
Mon, 27 Jun 2022 08:33:58 +0000 (10:33 +0200)
commit5b1ffe0543c7f7f3f5d62988ee3d5a49ac83abd3
tree44ad8925d2523a1dc64bc9b8c80171f00865158etree | snapshot
parentc2b535cc3dea070ee74936b1ad487b0d998dda58commit | diff
x86/sev: Avoid using __x86_return_thunk

Specifically, it's because __enc_copy() encrypts the kernel after
being relocated outside the kernel in sme_encrypt_execute(), and the
RET macro's jmp offset isn't amended prior to execution.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
arch/x86/mm/mem_encrypt_boot.S diff | blob | history
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