Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7;
From:   Nanyong Sun <sunnanyong@huawei.com>
To:     <catalin.marinas@arm.com>, <will@kernel.org>,
        <mike.kravetz@oracle.com>, <muchun.song@linux.dev>,
        <akpm@linux-foundation.org>, <anshuman.khandual@arm.com>
CC:     <willy@infradead.org>, <wangkefeng.wang@huawei.com>,
        <sunnanyong@huawei.com>, <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
Subject: [PATCH 3/3] arm64: mm: Re-enable OPTIMIZE_HUGETLB_VMEMMAP
Date:   Thu, 14 Dec 2023 15:39:12 +0800
Message-ID: <20231214073912.1938330-4-sunnanyong@huawei.com>
In-Reply-To: <20231214073912.1938330-1-sunnanyong@huawei.com>
References: <20231214073912.1938330-1-sunnanyong@huawei.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

Now update of vmemmap page table can follow the rule of
break-before-make safely for arm64 architecture, re-enable
HVO on arm64.

Signed-off-by: Nanyong Sun <sunnanyong@huawei.com>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7b071a00425d..43e3d5576fb2 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -103,6 +103,7 @@ config ARM64
 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
 	select ARCH_WANT_FRAME_POINTERS
 	select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
+	select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP
 	select ARCH_WANT_LD_ORPHAN_WARN
 	select ARCH_WANTS_NO_INSTR
 	select ARCH_WANTS_THP_SWAP if ARM64_4K_PAGES
-- 
2.25.1