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X-IronPort-AV: E=McAfee;i="6600,9927,10797"; a="361487659" X-IronPort-AV: E=Sophos;i="6.01,161,1684825200"; d="scan'208";a="361487659" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2023 02:27:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="875629237" Received: from yzhao56-desk.sh.intel.com ([10.239.159.62]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2023 02:27:41 -0700 From: Yan Zhao To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: pbonzini@redhat.com, seanjc@google.com, mike.kravetz@oracle.com, apopple@nvidia.com, jgg@nvidia.com, rppt@kernel.org, akpm@linux-foundation.org, kevin.tian@intel.com, david@redhat.com, Yan Zhao Subject: [RFC PATCH v2 4/5] mm/autonuma: call .numa_protect() when page is protected for NUMA migrate Date: Thu, 10 Aug 2023 17:00:48 +0800 Message-Id: <20230810090048.26184-1-yan.y.zhao@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230810085636.25914-1-yan.y.zhao@intel.com> References: <20230810085636.25914-1-yan.y.zhao@intel.com> X-Rspamd-Queue-Id: 64FD42002B X-Rspam-User: X-Stat-Signature: 4jftkejpdhdkysswnppqxnobz6zhbzgp X-Rspamd-Server: rspam01 X-HE-Tag: 1691659662-534898 X-HE-Meta: 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 LNeIeYWR c0e40xeD2ZmHl24vjzDZh6mmPMIYQk4zqDb0exSdtCGiZu36CivyyRNsKbsjqNnBaS0omma1xX6DiWcDKI3IV0tGiDh4QVO16ZGutg/gn3oGIGTej9XM6E+kdGqlpJXpNS2ZUrCOQdPs+9mBZsxOWn4xkUI+MCc/cuLCr X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Call mmu notifier's callback .numa_protect() in change_pmd_range() when a page is ensured to be protected by PROT_NONE for NUMA migration purpose. Signed-off-by: Yan Zhao --- mm/huge_memory.c | 1 + mm/mprotect.c | 1 + 2 files changed, 2 insertions(+) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a71cf686e3b2..8ae56507da12 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1892,6 +1892,7 @@ int change_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, if (sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING && !toptier) xchg_page_access_time(page, jiffies_to_msecs(jiffies)); + mmu_notifier_numa_protect(vma->vm_mm, addr, addr + PMD_SIZE); } /* * In case prot_numa, we are under mmap_read_lock(mm). It's critical diff --git a/mm/mprotect.c b/mm/mprotect.c index a1f63df34b86..c401814b2992 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -164,6 +164,7 @@ static long change_pte_range(struct mmu_gather *tlb, !toptier) xchg_page_access_time(page, jiffies_to_msecs(jiffies)); + mmu_notifier_numa_protect(vma->vm_mm, addr, addr + PAGE_SIZE); } oldpte = ptep_modify_prot_start(vma, addr, pte); -- 2.17.1