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| author | Joerg Roedel <jroedel@suse.de> | 2020-09-07 15:15:14 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-07 19:45:25 +0200 |
| commit | 64e682638eb51070ba6044535b250aad43c5564e (patch) | |
| tree | 9be00d00917c598ab9e3b8cc1534aa913ae9fd1f /arch/x86/include/asm/desc_defs.h | |
| parent | 6ba0efa46047936afa81460489cfd24bc95dd863 (diff) | |
| download | linux-next-64e682638eb51070ba6044535b250aad43c5564e.tar.gz | |
x86/boot/compressed/64: Add IDT Infrastructure
Add code needed to setup an IDT in the early pre-decompression
boot-code. The IDT is loaded first in startup_64, which is after
EfiExitBootServices() has been called, and later reloaded when the
kernel image has been relocated to the end of the decompression area.
This allows to setup different IDT handlers before and after the
relocation.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-14-joro@8bytes.org
Diffstat (limited to 'arch/x86/include/asm/desc_defs.h')
| -rw-r--r-- | arch/x86/include/asm/desc_defs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/desc_defs.h b/arch/x86/include/asm/desc_defs.h index a91f3b6e4f2a..5621fb3f2d1a 100644 --- a/arch/x86/include/asm/desc_defs.h +++ b/arch/x86/include/asm/desc_defs.h @@ -109,6 +109,9 @@ struct desc_ptr { #endif /* !__ASSEMBLY__ */ +/* Boot IDT definitions */ +#define BOOT_IDT_ENTRIES 32 + /* Access rights as returned by LAR */ #define AR_TYPE_RODATA (0 * (1 << 9)) #define AR_TYPE_RWDATA (1 * (1 << 9)) |