Re: [PATCH] x86: process fam 10h like k8 with fixed mtrr setting

Pavel Machek
2008-05-20T12:55:17Z

On Mon 2008-05-05 15:57:38, Yinghai Lu wrote:
>
> otherwise fixed MTRR for family 10h may not be changed
>
> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
>
> Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c
> +++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
> @@ -342,7 +342,7 @@ static void set_fixed_range(int msr, boo
>
> if (lo != msrwords[0] || hi != msrwords[1]) {
> if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
> - boot_cpu_data.x86 == 15 &&
> + (boot_cpu_data.x86 >= 0x0f && boot_cpu_data.x86 <= 0x11) &&
> ((msrwords[0] | msrwords[1]) & K8_MTRR_RDMEM_WRMEM_MASK))
> k8_enable_fixed_iorrs();
> mtrr_wrmsr(msr, msrwords[0], msrwords[1]);

This also changes family 0x11. Is that ok?

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