x86/boot/compressed/64: Add set_page_en/decrypted() helpers

Browse source

The functions are needed to map the GHCB for SEV-ES guests. The GHCB
is used for communication with the hypervisor, so its content must not
be encrypted. After the GHCB is not needed anymore it must be mapped
encrypted again so that the running kernel image can safely re-use the
memory.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-23-joro@8bytes.org

...

This commit is contained in:

Joerg Roedel 2020-09-07 15:15:23 +02:00 • committed by Borislav Petkov

parent 4b3fdca64a

commit c81d60029a

2 changed files with 135 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

133

arch/x86/boot/compressed/ident_map_64.c

View file

2

arch/x86/boot/compressed/misc.h

View file