Messages in this thread | | | From | Punit Agrawal <> | Subject | Re: [PATCH v2 0/3] arm64: Add support for handling memory corruption | Date | Thu, 18 May 2017 11:27:56 +0100 |
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Hi Manoj,
Manoj Iyer <manoj.iyer@canonical.com> writes:
> On Wed, May 17, 2017 at 10:23 AM, Punit Agrawal > <punit.agrawal@arm.com> wrote: > > Hi, This series enables memory failure handling for arm64. > Previous posting can be found at [0]. Changes since v1: * Reworked > Patch 1 based on Catalin's feedbak to symmetrically deal with PUD > and PMD hugepages in huge_pte_offset() * Added Steve's acks With > support for contiguous hugepages being turned off[1], some of the > problems arising from swap entries go away[2]. This simplifies the > changes needed to enable memory corruption handling for arm64 > (done in this seris). In this series, we updates huge_pte_offset() > to correctly deal with swap entries (Patch 1). This function will > need to be updated when contiguous hugepages are re-enabled. Patch > 2 adds support to send SIGBUS to processes that have their memory > corrupted. With the prerequisites in place, enable memory > corruption handling for arm64 (patch 3). > > Thanks, Punit [0] > https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1376052.html > [1] https://lkml.org/lkml/2017/4/7/486 [2] > https://lkml.org/lkml/2017/4/5/402 Jonathan (Zhixiong) Zhang (2): > arm64: hwpoison: add VM_FAULT_HWPOISON[_LARGE] handling arm64: > kconfig: allow support for memory failure handling Punit Agrawal > (1): arm64: hugetlb: Fix huge_pte_offset to return poisoned page > table entries arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/pgtable.h | 2 +- arch/arm64/mm/fault.c | 22 > +++++++++++++++++++--- arch/arm64/mm/hugetlbpage.c | 29 > ++++++++++------------------- 4 files changed, 31 insertions(+), > 23 deletions(-) > -- > 2.11.0 > > I applied Jonathans 2 patches to Ubuntu Zesty kernel (4.10) and ran > the mce-test ./run_hugepage.sh after fixing a few things in the test > case. This generated the bad pmd messages. > > linux-4.10.0/mm/pgtable-generic.c:33: bad pmd 0000000172420074. > > Then I applied Punit's patch to the kernel and re-ran the mce-test and > did not see the bad pmd messages. The tests were done on a Qualcomm > Centriq 2400 platform. > > Tested-by: Manoj Iyer <manoj.iyer@canonical.com>
Thanks for taking the patches for a spin.
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