diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-10 09:33:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-10 09:33:40 -0800 |
| commit | 01d5e7872c1c2c04f4fd419c9a4968e148efc5a0 (patch) | |
| tree | d6fcd96823ceb11aa0baff08b890a5c065b6cd78 /include | |
| parent | cd36722d74733b748ae812e37dcfe035b420de67 (diff) | |
| parent | 20f07a044a76aebaaa0603038857229b5c460d69 (diff) | |
Merge tag 'x86_sev_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
"The accumulated pile of x86/sev generalizations and cleanups:
- Share the SEV string unrolling logic with TDX as TDX guests need it
too
- Cleanups and generalzation of code shared by SEV and TDX"
* tag 'x86_sev_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Move common memory encryption code to mem_encrypt.c
x86/sev: Rename mem_encrypt.c to mem_encrypt_amd.c
x86/sev: Use CC_ATTR attribute to generalize string I/O unroll
x86/sev: Remove do_early_exception() forward declarations
x86/head64: Carve out the guest encryption postprocessing into a helper
x86/sev: Get rid of excessive use of defines
x86/sev: Shorten GHCB terminate macro names
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cc_platform.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h index a075b70b9a70..efd8205282da 100644 --- a/include/linux/cc_platform.h +++ b/include/linux/cc_platform.h @@ -61,6 +61,17 @@ enum cc_attr { * Examples include SEV-ES. */ CC_ATTR_GUEST_STATE_ENCRYPT, + + /** + * @CC_ATTR_GUEST_UNROLL_STRING_IO: String I/O is implemented with + * IN/OUT instructions + * + * The platform/OS is running as a guest/virtual machine and uses + * IN/OUT instructions in place of string I/O. + * + * Examples include TDX guest & SEV. + */ + CC_ATTR_GUEST_UNROLL_STRING_IO, }; #ifdef CONFIG_ARCH_HAS_CC_PLATFORM |