On Tue, Jun 04, 2013 at 02:02:43PM -0700, Yinghai Lu wrote:
> On Fri, May 31, 2013 at 2:59 PM, tip-bot for Jacob Shin
> <tipbot@xxxxxxxxx> wrote:
> > Commit-ID: 6b3389ac21b5e557b957f1497d0ff22bf733e8c3
> > Gitweb: http://git.kernel.org/tip/6b3389ac21b5e557b957f1497d0ff22bf733e8c3
> > Author: Jacob Shin <jacob.shin@xxxxxxx>
> > AuthorDate: Fri, 31 May 2013 01:53:24 -0500
> > Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
> > CommitDate: Fri, 31 May 2013 13:56:58 -0700
> >
> > x86, microcode, amd: Fix warnings and errors on with CONFIG_MICROCODE=m
> >
> > Fix section mismatch warnings on microcode_amd_early.
> > Compile error occurs when CONFIG_MICROCODE=m, change so that early
> > loading depends on microcode_core.
> >
> > Reported-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> > Reported-by: Borislav Petkov <bp@xxxxxxxxx>
> > Signed-off-by: Jacob Shin <jacob.shin@xxxxxxx>
> > Link: http://lkml.kernel.org/r/20130531150241.GA12006@jshin-Toonie
> > Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
> > ---
> > arch/x86/Kconfig | 2 +-
> > arch/x86/include/asm/microcode_amd.h | 2 +-
> > arch/x86/kernel/microcode_amd_early.c | 8 ++++----
> > 3 files changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index 28dba52..2705532 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -1065,7 +1065,7 @@ config MICROCODE_AMD_EARLY
> >
> > config MICROCODE_EARLY
> > bool "Early load microcode"
> > - depends on (MICROCODE_INTEL || MICROCODE_AMD) && BLK_DEV_INITRD
> > + depends on MICROCODE=y && BLK_DEV_INITRD
> > select MICROCODE_INTEL_EARLY if MICROCODE_INTEL
> > select MICROCODE_AMD_EARLY if MICROCODE_AMD
> > default y
> > diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h
> > index 24254aa..c6b043f 100644
> > --- a/arch/x86/include/asm/microcode_amd.h
> > +++ b/arch/x86/include/asm/microcode_amd.h
> > @@ -64,7 +64,7 @@ extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size)
> > #ifdef CONFIG_MICROCODE_AMD_EARLY
> > #ifdef CONFIG_X86_32
> > #define MPB_MAX_SIZE PAGE_SIZE
> > -extern u8 __cpuinitdata amd_bsp_mpb[MPB_MAX_SIZE];
> > +extern u8 amd_bsp_mpb[MPB_MAX_SIZE];
> > #endif
> > extern void __init load_ucode_amd_bsp(void);
> > extern void __cpuinit load_ucode_amd_ap(void);
> > diff --git a/arch/x86/kernel/microcode_amd_early.c b/arch/x86/kernel/microcode_amd_early.c
> > index 7e54d97..9618805 100644
> > --- a/arch/x86/kernel/microcode_amd_early.c
> > +++ b/arch/x86/kernel/microcode_amd_early.c
> > @@ -21,9 +21,9 @@ static u32 ucode_new_rev;
> > * Microcode patch container file is prepended to the initrd in cpio format.
> > * See Documentation/x86/early-microcode.txt
> > */
> > -static __initdata char ucode_path[] = "kernel/x86/microcode/AuthenticAMD.bin";
> > +static __cpuinitdata char ucode_path[] = "kernel/x86/microcode/AuthenticAMD.bin";
> >
> > -static struct cpio_data __init find_ucode_in_initrd(void)
> > +static struct cpio_data __cpuinit find_ucode_in_initrd(void)
> > {
> > long offset = 0;
> > struct cpio_data cd;
>
> does not like right fix.
>
> find_ucode_in_initrd should be __init.
>
> > @@ -62,7 +62,7 @@ static struct cpio_data __init find_ucode_in_initrd(void)
> > * load_microcode_amd() to save equivalent cpu table and microcode patches in
> > * kernel heap memory.
> > */
> > -static void __init apply_ucode_in_initrd(void)
> > +static void __cpuinit apply_ucode_in_initrd(void)
> > {
> > struct cpio_data cd;
> > struct equiv_cpu_entry *eq;
>
> it should not call find_ucode_in_initrd or
> it should be __init.
It's because the load_ucode_amd_ap() (which is __cpuinit because it
can be called during CPU hotplug on).
Hm.. but yes, I do agree with you, I'm waiting for feedback on this
follow up patch to allow multiple concatanated microcode files:
https://lkml.org/lkml/2013/5/31/664
I'll submit multi-patch patchset to address your feedback as well.
Thank you,
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