diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 21:21:35 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 21:21:35 +0100 |
| commit | 55db8eb4565f943dc0ebd1327cbe3d9d684f74e8 (patch) | |
| tree | 2c51b8d22b3ba379889c50137595b18f38acd93a /Documentation/arch | |
| parent | Merge tag 'x86_platform_for_v6.13' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| parent | x86/sev: Cleanup vc_handle_msr() (diff) | |
| download | linux-55db8eb4565f943dc0ebd1327cbe3d9d684f74e8.tar.xz linux-55db8eb4565f943dc0ebd1327cbe3d9d684f74e8.zip | |
Merge tag 'x86_sev_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Do the proper memory conversion of guest memory in order to be able
to kexec kernels in SNP guests along with other adjustments and
cleanups to that effect
- Start converting and moving functionality from the sev-guest driver
into core code with the purpose of supporting the secure TSC SNP
feature where the hypervisor cannot influence the TSC exposed to the
guest anymore
- Add a "nosnp" cmdline option in order to be able to disable SNP
support in the hypervisor and thus free-up resources which are not
going to be used
- Cleanups
[ Reminding myself about the endless TLA's again: SEV is the AMD Secure
Encrypted Virtualization - Linus ]
* tag 'x86_sev_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Cleanup vc_handle_msr()
x86/sev: Convert shared memory back to private on kexec
x86/mm: Refactor __set_clr_pte_enc()
x86/boot: Skip video memory access in the decompressor for SEV-ES/SNP
virt: sev-guest: Carve out SNP message context structure
virt: sev-guest: Reduce the scope of SNP command mutex
virt: sev-guest: Consolidate SNP guest messaging parameters to a struct
x86/sev: Cache the secrets page address
x86/sev: Handle failures from snp_init()
virt: sev-guest: Use AES GCM crypto library
x86/virt: Provide "nosnp" boot option for sev kernel command line
x86/virt: Move SEV-specific parsing into arch/x86/virt/svm
Diffstat (limited to 'Documentation/arch')
| -rw-r--r-- | Documentation/arch/x86/x86_64/boot-options.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/arch/x86/x86_64/boot-options.rst b/Documentation/arch/x86/x86_64/boot-options.rst index 98d4805f0823..d69e3cfbdba5 100644 --- a/Documentation/arch/x86/x86_64/boot-options.rst +++ b/Documentation/arch/x86/x86_64/boot-options.rst @@ -305,3 +305,8 @@ The available options are: debug Enable debug messages. + + nosnp + Do not enable SEV-SNP (applies to host/hypervisor only). Setting + 'nosnp' avoids the RMP check overhead in memory accesses when + users do not want to run SEV-SNP guests. |