Messages in this thread | | | Date | Wed, 4 Aug 2004 01:23:25 -0400 (EDT) | From | Zwane Mwaikambo <> | Subject | Re: MTRR driver model support broken on SMP. |
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On Wed, 4 Aug 2004, Nigel Cunningham wrote:
> MTRR driver support is broken on SMP because it calls smp functions with > interrupts disabled, but interrupts should be disabled because it is > called via device_power_up. > > Badness in smp_call_function at arch/i386/kernel/smp.c:565 > [<c0107f88>] dump_stack+0x1e/0x20 > [<c0116927>] smp_call_function+0x12b/0x137 > [<c011063f>] set_mtrr+0x67/0x121 > [<c0110c9b>] mtrr_restore+0x4f/0x73 > [<c0219c0f>] sysdev_resume+0x6f/0xf0 > [<c021d591>] device_power_up+0x8/0xf
Looking at this i'm really curious as to whether we need to bother at all, can you remove the mtrr restore code and then compare /proc/mtrr before and after suspending. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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