From mboxrd@z Thu Jan 1 00:00:00 1970 From: punit.agrawal@arm.com (Punit Agrawal) Date: Tue, 23 May 2017 15:53:10 +0100 Subject: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() In-Reply-To: (Arnd Bergmann's message of "Mon, 22 May 2017 22:34:45 +0200") References: <20170522133604.11392-5-punit.agrawal@arm.com> <20170522162555.4313-1-punit.agrawal@arm.com> Message-ID: <87efvfhbft.fsf@e105922-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Arnd Bergmann writes: > On Mon, May 22, 2017 at 6:25 PM, Punit Agrawal wrote: >> When unmapping a hugepage range, huge_pte_clear() is used to clear the >> page table entries that are marked as not present. huge_pte_clear() >> internally just ends up calling pte_clear() which does not correctly >> deal with hugepages consisting of contiguous page table entries. >> >> Add a size argument to address this issue and allow architectures to >> override huge_pte_clear() by wrapping it in a #ifndef block. >> >> Update s390 implementation with the size parameter as well. >> >> Note that the change only affects huge_pte_clear() - the other generic >> hugetlb functions don't need any change. >> >> Signed-off-by: Punit Agrawal >> Cc: Martin Schwidefsky >> Cc: Heiko Carstens >> Cc: Arnd Bergmann >> Cc: "Aneesh Kumar K.V" >> Cc: Mike Kravetz > > Acked-by: Arnd Bergmann Thanks, Arnd. I've applied the tag locally. > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo at kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: email at kvack.org