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| author |   Michael Roth <michael.roth@amd.com> | 2022-02-09 12:09:59 -0600 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-04-06 12:59:17 +0200 |
| commit | 176db622573f028f85221873ea4577e096785315 (patch) | |
| tree | 3202dd9001030fc4a5033615da147ddf7b7446e6 /include/linux/cc_platform.h | |
| parent | KVM: SVM: Update the SEV-ES save area mapping (diff) | |
| download | wireguard-linux-176db622573f028f85221873ea4577e096785315.tar.xz wireguard-linux-176db622573f028f85221873ea4577e096785315.zip | |
x86/boot: Introduce helpers for MSR reads/writes
The current set of helpers used throughout the run-time kernel have
dependencies on code/facilities outside of the boot kernel, so there
are a number of call-sites throughout the boot kernel where inline
assembly is used instead. More will be added with subsequent patches
that add support for SEV-SNP, so take the opportunity to provide a basic
set of helpers that can be used by the boot kernel to reduce reliance on
inline assembly.
Use boot_* prefix so that it's clear these are helpers specific to the
boot kernel to avoid any confusion with the various other MSR read/write
helpers.
[ bp: Disambiguate parameter names and trim comment. ]
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220307213356.2797205-6-brijesh.singh@amd.com
Diffstat (limited to 'include/linux/cc_platform.h')
0 files changed, 0 insertions, 0 deletions