[PATCH] x86: amd opteron TOM2 mask val fix - Kernel

This is a discussion on [PATCH] x86: amd opteron TOM2 mask val fix - Kernel ; there is typo with the mask. need to remove that extra 0. to avoid 4bits was cleared. Signed-off-by: Yinghal Lu 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 @@ -233,7 +233,7 @@ void __init get_mtrr_state(void) mtrr_tom2 = high; mtrr_tom2 mtrr_tom2 ...

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Thread: [PATCH] x86: amd opteron TOM2 mask val fix

  1. [PATCH] x86: amd opteron TOM2 mask val fix


    there is typo with the mask. need to remove that extra 0. to avoid 4bits was cleared.

    Signed-off-by: Yinghal Lu

    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
    @@ -233,7 +233,7 @@ void __init get_mtrr_state(void)
    mtrr_tom2 = high;
    mtrr_tom2 <<= 32;
    mtrr_tom2 |= low;
    - mtrr_tom2 &= 0xffffff8000000ULL;
    + mtrr_tom2 &= 0xffffff800000ULL;
    }
    if (mtrr_show) {
    int high_width;
    Index: linux-2.6/arch/x86/pci/k8-bus_64.c
    ================================================== =================
    --- linux-2.6.orig/arch/x86/pci/k8-bus_64.c
    +++ linux-2.6/arch/x86/pci/k8-bus_64.c
    @@ -384,7 +384,7 @@ static int __init early_fill_mp_bus_info
    /* need to take out [0, TOM) for RAM*/
    address = MSR_K8_TOP_MEM1;
    rdmsrl(address, val);
    - end = (val & 0xffffff8000000ULL);
    + end = (val & 0xffffff800000ULL);
    printk(KERN_INFO "TOM: %016lx aka %ldM\n", end, end>>20);
    if (end < (1ULL<<32))
    update_range(range, 0, end - 1);
    @@ -478,7 +478,7 @@ static int __init early_fill_mp_bus_info
    /* TOP_MEM2 */
    address = MSR_K8_TOP_MEM2;
    rdmsrl(address, val);
    - end = (val & 0xffffff8000000ULL);
    + end = (val & 0xffffff800000ULL);
    printk(KERN_INFO "TOM2: %016lx aka %ldM\n", end, end>>20);
    update_range(range, 1ULL<<32, end - 1);
    }
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  2. Re: [PATCH] x86: amd opteron TOM2 mask val fix


    * Yinghai Lu wrote:

    > there is typo with the mask. need to remove that extra 0. to avoid
    > 4bits was cleared.


    applied, thanks.

    Ingo
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