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a=openpgp-sha256; l=3139; i=ardb@kernel.org; h=from:subject; bh=1OMnBnM3B5uy1EYv4XyX2QqLee71wb5xFGUqQq+IsUU=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIf37qTbnjFluV2qrldV1vde/X/1KYO3nsp1yTdMyjm3QP vPWOYeho5SFQYyDQVZMkUVg9t93O09PlKp1niULM4eVCWQIAxenAEzkywJGhuvBnsdjV3w5vvnH OivuuDnN8bn3XLa+VD8vqSyx96O2vDYjw8SF97e8VRB3Xb4tx/qV6ub1+gv8m8TuH7RhjJv6xeU oAysA X-Mailer: git-send-email 2.49.0.504.g3bcea36a83-goog Message-ID: <20250410134117.3713574-18-ardb+git@google.com> Subject: [PATCH v4 05/11] x86/boot: Move early SME init code into startup/ From: Ard Biesheuvel To: linux-efi@vger.kernel.org Cc: x86@kernel.org, mingo@kernel.org, linux-kernel@vger.kernel.org, Ard Biesheuvel , Tom Lendacky , Dionna Amalie Glaze , Kevin Loughlin Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel Move the SME initialization code, which runs from the 1:1 mapping of memory as it operates on the kernel virtual mapping, into the new sub-directory arch/x86/boot/startup/ where all startup code will reside that needs to tolerate executing from the 1:1 mapping. Signed-off-by: Ard Biesheuvel --- arch/x86/boot/startup/Makefile | 1 + arch/x86/{mm/mem_encrypt_identity.c =3D> boot/startup/sme.c} | 2 -- arch/x86/mm/Makefile | 6 ------ 3 files changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 10319aee666b..ccdfc42a4d59 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -16,6 +16,7 @@ UBSAN_SANITIZE :=3D n KCOV_INSTRUMENT :=3D n =20 obj-$(CONFIG_X86_64) +=3D gdt_idt.o map_kernel.o +obj-$(CONFIG_AMD_MEM_ENCRYPT) +=3D sme.o =20 lib-$(CONFIG_X86_64) +=3D la57toggle.o lib-$(CONFIG_EFI_MIXED) +=3D efi-mixed.o diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/boot/startup/sme= .c similarity index 99% rename from arch/x86/mm/mem_encrypt_identity.c rename to arch/x86/boot/startup/sme.c index e7fb3779b35f..23d10cda5b58 100644 --- a/arch/x86/mm/mem_encrypt_identity.c +++ b/arch/x86/boot/startup/sme.c @@ -45,8 +45,6 @@ #include #include =20 -#include "mm_internal.h" - #define PGD_FLAGS _KERNPG_TABLE_NOENC #define P4D_FLAGS _KERNPG_TABLE_NOENC #define PUD_FLAGS _KERNPG_TABLE_NOENC diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 32035d5be5a0..3faa60f13a61 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -3,12 +3,10 @@ KCOV_INSTRUMENT_tlb.o :=3D n KCOV_INSTRUMENT_mem_encrypt.o :=3D n KCOV_INSTRUMENT_mem_encrypt_amd.o :=3D n -KCOV_INSTRUMENT_mem_encrypt_identity.o :=3D n KCOV_INSTRUMENT_pgprot.o :=3D n =20 KASAN_SANITIZE_mem_encrypt.o :=3D n KASAN_SANITIZE_mem_encrypt_amd.o :=3D n -KASAN_SANITIZE_mem_encrypt_identity.o :=3D n KASAN_SANITIZE_pgprot.o :=3D n =20 # Disable KCSAN entirely, because otherwise we get warnings that some func= tions @@ -16,12 +14,10 @@ KASAN_SANITIZE_pgprot.o :=3D n KCSAN_SANITIZE :=3D n # Avoid recursion by not calling KMSAN hooks for CEA code. KMSAN_SANITIZE_cpu_entry_area.o :=3D n -KMSAN_SANITIZE_mem_encrypt_identity.o :=3D n =20 ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o =3D -pg CFLAGS_REMOVE_mem_encrypt_amd.o =3D -pg -CFLAGS_REMOVE_mem_encrypt_identity.o =3D -pg CFLAGS_REMOVE_pgprot.o =3D -pg endif =20 @@ -32,7 +28,6 @@ obj-y +=3D pat/ =20 # Make sure __phys_addr has no stackprotector CFLAGS_physaddr.o :=3D -fno-stack-protector -CFLAGS_mem_encrypt_identity.o :=3D -fno-stack-protector =20 CFLAGS_fault.o :=3D -I $(src)/../include/asm/trace =20 @@ -63,5 +58,4 @@ obj-$(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION) +=3D pti.o obj-$(CONFIG_X86_MEM_ENCRYPT) +=3D mem_encrypt.o obj-$(CONFIG_AMD_MEM_ENCRYPT) +=3D mem_encrypt_amd.o =20 -obj-$(CONFIG_AMD_MEM_ENCRYPT) +=3D mem_encrypt_identity.o obj-$(CONFIG_AMD_MEM_ENCRYPT) +=3D mem_encrypt_boot.o --=20 2.49.0.504.g3bcea36a83-goog