mirror of https://github.com/torvalds/linux.git
cb1c9e02b0
In preparation for updating the EFI stub boot flow to avoid the bare metal decompressor code altogether, implement the support code for switching between 4 and 5 levels of paging before jumping to the kernel proper. Reuse the newly refactored trampoline that the bare metal decompressor uses, but relies on EFI APIs to allocate 32-bit addressable memory and remap it with the appropriate permissions. Given that the bare metal decompressor will no longer call into the trampoline if the number of paging levels is already set correctly, it is no longer needed to remove NX restrictions from the memory range where this trampoline may end up. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Link: https://lore.kernel.org/r/20230807162720.545787-17-ardb@kernel.org |
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| .. | ||
| libstub | ||
| test | ||
| Kconfig | ||
| Makefile | ||
| apple-properties.c | ||
| arm-runtime.c | ||
| capsule-loader.c | ||
| capsule.c | ||
| cper-arm.c | ||
| cper-x86.c | ||
| cper.c | ||
| cper_cxl.c | ||
| cper_cxl.h | ||
| dev-path-parser.c | ||
| earlycon.c | ||
| efi-bgrt.c | ||
| efi-init.c | ||
| efi-pstore.c | ||
| efi.c | ||
| efibc.c | ||
| embedded-firmware.c | ||
| esrt.c | ||
| fdtparams.c | ||
| memattr.c | ||
| memmap.c | ||
| mokvar-table.c | ||
| rci2-table.c | ||
| reboot.c | ||
| riscv-runtime.c | ||
| runtime-wrappers.c | ||
| sysfb_efi.c | ||
| tpm.c | ||
| unaccepted_memory.c | ||
| vars.c | ||