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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-29 01:15:37 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-29 01:15:37 +0300 |
| commit | bd9e99f790f21374b831a7dcf638156beacf3bf4 (patch) | |
| tree | 5e1e77733549a94965651c1e47fceb667b63103a /Documentation | |
| parent | 6f49693a6c85e7156d8fde589d9795a01c33c51a (diff) | |
| parent | a1b87d54f4e45ff5e0d081fb1d9db3bf1a8fb39a (diff) | |
| download | linux-bd9e99f790f21374b831a7dcf638156beacf3bf4.tar.xz | |
Merge tag 'x86_boot_for_v6.6_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Borislav Petkov:
"Avoid the baremetal decompressor code when booting on an EFI machine.
This is mandated by the current tightening of EFI executables
requirements when used in a secure boot scenario. More specifically,
an EFI executable cannot have a single section with RWX permissions,
which conflicts with the in-place kernel decompression that is done
today.
Instead, the things required by the booting kernel image are done in
the EFI stub now.
Work by Ard Biesheuvel"
* tag 'x86_boot_for_v6.6_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
x86/efistub: Avoid legacy decompressor when doing EFI boot
x86/efistub: Perform SNP feature test while running in the firmware
efi/libstub: Add limit argument to efi_random_alloc()
x86/decompressor: Factor out kernel decompression and relocation
x86/decompressor: Move global symbol references to C code
decompress: Use 8 byte alignment
x86/efistub: Prefer EFI memory attributes protocol over DXE services
x86/efistub: Perform 4/5 level paging switch from the stub
x86/decompressor: Merge trampoline cleanup with switching code
x86/decompressor: Pass pgtable address to trampoline directly
x86/decompressor: Only call the trampoline when changing paging levels
x86/decompressor: Call trampoline directly from C code
x86/decompressor: Avoid the need for a stack in the 32-bit trampoline
x86/decompressor: Use standard calling convention for trampoline
x86/decompressor: Call trampoline as a normal function
x86/decompressor: Assign paging related global variables earlier
x86/decompressor: Store boot_params pointer in callee save register
x86/efistub: Clear BSS in EFI handover protocol entrypoint
x86/decompressor: Avoid magic offsets for EFI handover entrypoint
x86/efistub: Simplify and clean up handover entry code
...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arch/x86/boot.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/arch/x86/boot.rst b/Documentation/arch/x86/boot.rst index 33520ecdb37a..cdbca15a4fc2 100644 --- a/Documentation/arch/x86/boot.rst +++ b/Documentation/arch/x86/boot.rst @@ -1417,7 +1417,7 @@ execution context provided by the EFI firmware. The function prototype for the handover entry point looks like this:: - efi_main(void *handle, efi_system_table_t *table, struct boot_params *bp) + efi_stub_entry(void *handle, efi_system_table_t *table, struct boot_params *bp) 'handle' is the EFI image handle passed to the boot loader by the EFI firmware, 'table' is the EFI system table - these are the first two |