Messages in this thread Patch in this message | | | Date | Mon, 18 May 2020 22:15:11 +0300 | From | Mike Rapoport <> | Subject | Re: [PATCH v5 04/18] sparc32: mm: Reduce allocation size for PMD and PTE tables |
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On Mon, May 18, 2020 at 11:09:46AM -0700, Guenter Roeck wrote: > On 5/18/20 7:23 AM, Mike Rapoport wrote: > > Below is another set of bisect results, from next-20200518. It points to one > of your commits. This is for microblaze (big endian) boot failures.
The microblaze one was easy, as for sparc32 I still have no clue for the root cause :(
Andrew, can you please fold it into "mm: pgtable: add shortcuts for accessing kernel PMD and PTE"?
From 167250de28aa526342641b2647294a755d234090 Mon Sep 17 00:00:00 2001 From: Mike Rapoport <rppt@linux.ibm.com> Date: Mon, 18 May 2020 22:08:10 +0300 Subject: [PATCH] microblaze: fix page table traversal in setup_rt_frame()
The replacement of long folded page table traversal with the direct access to PMD entry wrongly used the kernel page table in setup_rt_frame() function instead of the process (current->mm) page table.
Fix it.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> --- arch/microblaze/kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index 28b1ec4b4e79..bdd6d0c86e16 100644 --- a/arch/microblaze/kernel/signal.c +++ b/arch/microblaze/kernel/signal.c @@ -194,7 +194,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, address = ((unsigned long)frame->tramp); #ifdef CONFIG_MMU - pmdp = pmd_off_k(address); + pmdp = pmd_off(current->mm, address); preempt_disable(); ptep = pte_offset_map(pmdp, address); -- 2.26.2
> Guenter > > ---
-- Sincerely yours, Mike.
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