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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-01 15:52:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-01 15:52:26 -0700 |
| commit | 20273d2588c48563e95549e055eeb16ded64dee8 (patch) | |
| tree | 9d021cb1d711ee4affec192317bf55fbb1425fbd /arch/x86/mm | |
| parent | 160729afc83c0053cb3c574b85e84574ad892bd7 (diff) | |
| parent | 007faec014cb5d26983c1f86fd08c6539b41392e (diff) | |
| download | linux-20273d2588c48563e95549e055eeb16ded64dee8.tar.bz2 | |
Merge tag 'x86_sev_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Export sev_es_ghcb_hv_call() so that HyperV Isolation VMs can use it
too
- Non-urgent fixes and cleanups
* tag 'x86_sev_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV
x86/sev: Allow #VC exceptions on the VC2 stack
x86/sev: Fix stack type check in vc_switch_off_ist()
x86/sme: Use #define USE_EARLY_PGTABLE_L5 in mem_encrypt_identity.c
x86/sev: Carve out HV call's return value verification
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/mem_encrypt_identity.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c index f8c612902038..3f0abb403340 100644 --- a/arch/x86/mm/mem_encrypt_identity.c +++ b/arch/x86/mm/mem_encrypt_identity.c @@ -27,6 +27,15 @@ #undef CONFIG_PARAVIRT_XXL #undef CONFIG_PARAVIRT_SPINLOCKS +/* + * This code runs before CPU feature bits are set. By default, the + * pgtable_l5_enabled() function uses bit X86_FEATURE_LA57 to determine if + * 5-level paging is active, so that won't work here. USE_EARLY_PGTABLE_L5 + * is provided to handle this situation and, instead, use a variable that + * has been set by the early boot code. + */ +#define USE_EARLY_PGTABLE_L5 + #include <linux/kernel.h> #include <linux/mm.h> #include <linux/mem_encrypt.h> |