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| author | Joerg Roedel <jroedel@suse.de> | 2020-09-08 14:35:17 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-09 10:45:24 +0200 |
| commit | 74d8d9d531b4cc945a9f75aa2fc21d99ca5a9fe3 (patch) | |
| tree | ba719ed3c3be8531a375850a80df229a29c375e1 /arch/x86/include/asm/sev-es.h | |
| parent | x86/sev-es: Compile early handler code into kernel image (diff) | |
| download | linux-74d8d9d531b4cc945a9f75aa2fc21d99ca5a9fe3.tar.xz linux-74d8d9d531b4cc945a9f75aa2fc21d99ca5a9fe3.zip | |
x86/sev-es: Setup an early #VC handler
Setup an early handler for #VC exceptions. There is no GHCB mapped
yet, so just re-use the vc_no_ghcb_handler(). It can only handle
CPUID exit-codes, but that should be enough to get the kernel through
verify_cpu() and __startup_64() until it runs on virtual addresses.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
[ boot failure Error: kernel_ident_mapping_init() failed. ]
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lkml.kernel.org/r/20200908123517.GA3764@8bytes.org
Diffstat (limited to 'arch/x86/include/asm/sev-es.h')
| -rw-r--r-- | arch/x86/include/asm/sev-es.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/sev-es.h b/arch/x86/include/asm/sev-es.h index 6dc52440c4b4..7175d432ebfe 100644 --- a/arch/x86/include/asm/sev-es.h +++ b/arch/x86/include/asm/sev-es.h @@ -73,4 +73,7 @@ static inline u64 lower_bits(u64 val, unsigned int bits) return (val & mask); } +/* Early IDT entry points for #VC handler */ +extern void vc_no_ghcb(void); + #endif |