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x86/boot/compressed/64: Setup a GHCB-based VC Exception handler

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Install an exception handler for #VC exception that uses a GHCB. Also
add the infrastructure for handling different exit-codes by decoding
the instruction that caused the exception and error handling.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-24-joro@8bytes.org
This commit is contained in:
Joerg Roedel 2020-09-07 15:15:24 +02:00 • committed by Borislav Petkov
commit 597cfe4821
10 changed files with 331 additions and 1 deletions
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