From: Chris Wilson
Date: Mon, 9 Jan 2017 11:37:07 +
> Could some mm expert explain why it is safe for mm/vmalloc.c to ignore
> huge pud/pmd that raise BUG_ON in the same code in mm/memory.c
> (vmap_pmd_range() vs apply_to_pmd_range())?
>
> At a guess, is sparc64
From: Chris Wilson
Date: Mon, 9 Jan 2017 11:37:07 +
> Could some mm expert explain why it is safe for mm/vmalloc.c to ignore
> huge pud/pmd that raise BUG_ON in the same code in mm/memory.c
> (vmap_pmd_range() vs apply_to_pmd_range())?
>
> At a guess, is sparc64 covering the init_mm with a
On Fri, Oct 28, 2016 at 10:18:25AM -0700, Guenter Roeck wrote:
> Hi,
>
> when running sparc64 images in qemu, I see the following crash.
> This is with next-20161028.
>
> [2.530785] clocksource: jiffies: mask: 0x max_cycles:
> 0x,max_idle_ns: 1911260446275 ns
> [
On Fri, Oct 28, 2016 at 10:18:25AM -0700, Guenter Roeck wrote:
> Hi,
>
> when running sparc64 images in qemu, I see the following crash.
> This is with next-20161028.
>
> [2.530785] clocksource: jiffies: mask: 0x max_cycles:
> 0x,max_idle_ns: 1911260446275 ns
> [
On Fri, 28 Oct 2016 21:15:48 +0100 Chris Wilson
wrote:
> > Bisect points to commit 0c79e3331f08 ("mm/vmalloc: replace opencoded 4-level
> > page walkers"). Reverting this patch fixes the problem.
>
> Hmm, apply_to_pte_range() has a BUG_ON(pmd_huge(*pmd)) but the old
>
On Fri, 28 Oct 2016 21:15:48 +0100 Chris Wilson
wrote:
> > Bisect points to commit 0c79e3331f08 ("mm/vmalloc: replace opencoded 4-level
> > page walkers"). Reverting this patch fixes the problem.
>
> Hmm, apply_to_pte_range() has a BUG_ON(pmd_huge(*pmd)) but the old
> vmap_pte_range() does not
On Fri, Oct 28, 2016 at 10:18:25AM -0700, Guenter Roeck wrote:
> Hi,
>
> when running sparc64 images in qemu, I see the following crash.
> This is with next-20161028.
>
> [2.530785] clocksource: jiffies: mask: 0x max_cycles:
> 0x,max_idle_ns: 1911260446275 ns
> [
On Fri, Oct 28, 2016 at 10:18:25AM -0700, Guenter Roeck wrote:
> Hi,
>
> when running sparc64 images in qemu, I see the following crash.
> This is with next-20161028.
>
> [2.530785] clocksource: jiffies: mask: 0x max_cycles:
> 0x,max_idle_ns: 1911260446275 ns
> [
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