linux-kernel - [PATCH 3/4] arm64/mm: Enable HugeTLB migration

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue,  2 Oct 2018 17:45:30 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     suzuki.poulose@....com, punit.agrawal@....com, will.deacon@....com,
        Steven.Price@....com, catalin.marinas@....com, mhocko@...nel.org,
        mike.kravetz@...cle.com, n-horiguchi@...jp.nec.com
Subject: [PATCH 3/4] arm64/mm: Enable HugeTLB migration

Let arm64 subscribe to generic HugeTLB page migration framework. Right now
this only works on the following PMD and PUD level HugeTLB page sizes with
various kernel base page size combinations.

       CONT PTE    PMD    CONT PMD    PUD
       --------    ---    --------    ---
4K:         NA     2M         NA      1G
16K:        NA    32M         NA
64K:        NA   512M         NA

Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 arch/arm64/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1b1a0e9..e54350f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1305,6 +1305,10 @@ config SYSVIPC_COMPAT
 	def_bool y
 	depends on COMPAT && SYSVIPC
 
+config ARCH_ENABLE_HUGEPAGE_MIGRATION
+	def_bool y
+	depends on HUGETLB_PAGE && MIGRATION
+
 menu "Power management options"
 
 source "kernel/power/Kconfig"
-- 
2.7.4