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| author | Philipp Rudo <prudo@linux.vnet.ibm.com> | 2018-04-14 00:36:46 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-14 02:10:28 +0200 |
| commit | df6f2801f511b07c08c110fe9f047a34cb40286f (patch) | |
| tree | 71949b732c86f7ee9337adc4490b76ffdf292c0d /arch/x86/purgatory/Makefile | |
| parent | kernel/kexec_file.c: allow archs to set purgatory load address (diff) | |
| download | linux-df6f2801f511b07c08c110fe9f047a34cb40286f.tar.xz linux-df6f2801f511b07c08c110fe9f047a34cb40286f.zip | |
kernel/kexec_file.c: move purgatories sha256 to common code
The code to verify the new kernels sha digest is applicable for all
architectures. Move it to common code.
One problem is the string.c implementation on x86. Currently sha256
includes x86/boot/string.h which defines memcpy and memset to be gcc
builtins. By moving the sha256 implementation to common code and
changing the include to linux/string.h both functions are no longer
defined. Thus definitions have to be provided in x86/purgatory/string.c
Link: http://lkml.kernel.org/r/20180321112751.22196-12-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/purgatory/Makefile')
| -rw-r--r-- | arch/x86/purgatory/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index d70c15de417b..2e9ee023e6bc 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -6,6 +6,9 @@ purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string targets += $(purgatory-y) PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) +$(obj)/sha256.o: $(srctree)/lib/sha256.c + $(call if_changed_rule,cc_o_c) + LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib targets += purgatory.ro |