Re: [PATCH v4 2/3] x86/mce: Define function to extract ErrorAddr from MCA_ADDR

[Borislav Petkov <bp@alien8.de>]

On Thu, Mar 31, 2022 at 03:24:37PM +0200, Borislav Petkov wrote:
> diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
> index 1940d305db1c..a1a4a5dc53e8 100644
> --- a/arch/x86/kernel/cpu/mce/amd.c
> +++ b/arch/x86/kernel/cpu/mce/amd.c
> @@ -722,6 +722,19 @@ bool amd_mce_is_memory_error(struct mce *m)
>  	return m->bank == 4 && xec == 0x8;
>  }
>  
> +/* Extract [55:<lsb>] where lsb is the LS-*valid* bit of the address bits. */
> +void smca_extract_err_addr(struct mce *m)

In addition:

diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index 9ccc2ea0ea00..4acc7959be6e 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -723,7 +723,7 @@ bool amd_mce_is_memory_error(struct mce *m)
 }
 
 /* Extract [55:<lsb>] where lsb is the LS-*valid* bit of the address bits. */
-void smca_extract_err_addr(struct mce *m)
+void __always_inline smca_extract_err_addr(struct mce *m)
 {
 	u8 lsb;
 

because some compilers cause:

vmlinux.o: warning: objtool: mce_read_aux()+0x82: call to smca_extract_err_addr() leaves .noinstr.text section

-- 
Regards/Gruss,
    Boris.

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