The patch titled
Subject: mm/huge_memory.c: update tlb entry if pmd is changed
has been added to the -mm tree. Its filename is
mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Bibo Mao <maobibo@xxxxxxxxxxx>
Subject: mm/huge_memory.c: update tlb entry if pmd is changed
When set_pmd_at is called in function do_huge_pmd_anonymous_page, new tlb
entry can be added by software on MIPS platform.
Here add update_mmu_cache_pmd when pmd entry is set, and
update_mmu_cache_pmd is defined as empty excepts arc/mips platform. This
patch has no negative effect on other platforms except arc/mips system.
Link: http://lkml.kernel.org/r/1592990792-1923-2-git-send-email-maobibo@xxxxxxxxxxx
Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Daniel Silsby <dansilsby@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Paul Burton <paulburton@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/huge_memory.c~mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed
+++ a/mm/huge_memory.c
@@ -643,6 +643,7 @@ static vm_fault_t __do_huge_pmd_anonymou
lru_cache_add_active_or_unevictable(page, vma);
pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable);
set_pmd_at(vma->vm_mm, haddr, vmf->pmd, entry);
+ update_mmu_cache_pmd(vma, vmf->address, vmf->pmd);
add_mm_counter(vma->vm_mm, MM_ANONPAGES, HPAGE_PMD_NR);
mm_inc_nr_ptes(vma->vm_mm);
spin_unlock(vmf->ptl);
@@ -756,6 +757,7 @@ vm_fault_t do_huge_pmd_anonymous_page(st
} else {
set_huge_zero_page(pgtable, vma->vm_mm, vma,
haddr, vmf->pmd, zero_page);
+ update_mmu_cache_pmd(vma, vmf->address, vmf->pmd);
spin_unlock(vmf->ptl);
set = true;
}
_
Patches currently in -mm which might be from maobibo@xxxxxxxxxxx are
mm-set-page-fault-address-for-update_mmu_cache_pmd.patch
mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed.patch
mips-do-not-call-flush_tlb_all-when-setting-pmd-entry.patch
