bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

x86/sev, crypto/ccp: Move SNP init to ccp driver

Browse Source 
Use the new snp_prepare() to initialize SNP from the ccp driver instead of at
boot time. This means that SNP is not enabled unless it is really going to be
used (i.e. kvm_amd loads the ccp driver automatically).

Signed-off-by: Tycho Andersen (AMD) <tycho@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://patch.msgid.link/20260324161301.1353976-5-tycho@kernel.org
This commit is contained in:
Tycho Andersen (AMD)
2026-03-24 10:12:58 -06:00
committed by Borislav Petkov (AMD)
parent b65546b14d
commit 299933b118
2 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/crypto/ccp/sev-dev.c
View File

@@ -1373,6 +1373,8 @@ static int __sev_snp_init_locked(int *error, unsigned int max_snp_asid)
return -EOPNOTSUPP;
}
snp_prepare();
/* SNP_INIT requires MSR_VM_HSAVE_PA to be cleared on all CPUs. */
on_each_cpu(snp_set_hsave_pa, NULL, 1);