[GIT pull] x86 fixes for 3.18

From: Thomas Gleixner
Date: Fri Dec 05 2014 - 12:00:14 EST


Linus,

please pull the latest x86-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

Two final fixlets for 3.18:
- Prevent microcode reload wreckage on 32bit
- Unbreak cross compilation

Thanks,

tglx

------------------>
Borislav Petkov (1):
x86, microcode: Limit the microcode reloading to 64-bit for now

Chris Clayton (1):
x86: Use $(OBJDUMP) instead of plain objdump


arch/x86/boot/compressed/Makefile | 2 +-
arch/x86/kernel/cpu/microcode/core.c | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index be1e07d4b596..45abc363dd3e 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -76,7 +76,7 @@ suffix-$(CONFIG_KERNEL_XZ) := xz
suffix-$(CONFIG_KERNEL_LZO) := lzo
suffix-$(CONFIG_KERNEL_LZ4) := lz4

-RUN_SIZE = $(shell objdump -h vmlinux | \
+RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \
perl $(srctree)/arch/x86/tools/calc_run_size.pl)
quiet_cmd_mkpiggy = MKPIGGY $@
cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false )
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index 2ce9051174e6..08fe6e8a726e 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -465,6 +465,7 @@ static void mc_bp_resume(void)

if (uci->valid && uci->mc)
microcode_ops->apply_microcode(cpu);
+#ifdef CONFIG_X86_64
else if (!uci->mc)
/*
* We might resume and not have applied late microcode but still
@@ -473,6 +474,7 @@ static void mc_bp_resume(void)
* applying patches early on the APs.
*/
load_ucode_ap();
+#endif
}

static struct syscore_ops mc_syscore_ops = {
--
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