3 commits

Author	SHA1	Message	Date
Ard Biesheuvel	cf1d2ffcc6	efi: Discover BTI support in runtime services regions ... Add the generic plumbing to detect whether or not the runtime code regions were constructed with BTI/IBT landing pads by the firmware, permitting the OS to enable enforcement when mapping these regions into the OS's address space. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org>	2023-02-04 09:19:02 +01:00
Heinrich Schuchardt	630f972d76	riscv: read-only pages should not be writable ... If EFI pages are marked as read-only, we should remove the _PAGE_WRITE flag. The current code overwrites an unused value. Fixes: b91540d52a ("RISC-V: Add EFI runtime services") Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Link: https://lore.kernel.org/r/20220528014132.91052-1-heinrich.schuchardt@canonical.com Signed-off-by: Ard Biesheuvel <ardb@kernel.org>	2022-05-28 11:39:31 +02:00
Atish Patra	b91540d52a	RISC-V: Add EFI runtime services ... This patch adds EFI runtime service support for RISC-V. Signed-off-by: Atish Patra <atish.patra@wdc.com> [ardb: - Remove the page check] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>	2020-10-02 14:31:28 -07:00