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
| ||
|
Date: Tue, 2 Oct 2018 13:38:01 +0100 From: Suzuki K Poulose <suzuki.poulose@....com> To: Anshuman Khandual <anshuman.khandual@....com>, linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: 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: Re: [PATCH 1/4] mm/hugetlb: Enable PUD level huge page migration Hi Anshuman On 02/10/18 13:15, Anshuman Khandual wrote: > Architectures like arm64 have PUD level HugeTLB pages for certain configs > (1GB huge page is PUD based on ARM64_4K_PAGES base page size) that can be > enabled for migration. It can be achieved through checking for PUD_SHIFT > order based HugeTLB pages during migration. > > Signed-off-by: Anshuman Khandual <anshuman.khandual@....com> > --- > include/linux/hugetlb.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h > index 6b68e34..9c1b77f 100644 > --- a/include/linux/hugetlb.h > +++ b/include/linux/hugetlb.h > @@ -483,7 +483,8 @@ static inline bool hugepage_migration_supported(struct hstate *h) > { > #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION > if ((huge_page_shift(h) == PMD_SHIFT) || > - (huge_page_shift(h) == PGDIR_SHIFT)) > + (huge_page_shift(h) == PUD_SHIFT) || > + (huge_page_shift(h) == PGDIR_SHIFT)) nit: Extra Tab ^^. Also, if only arm64 supports PUD_SHIFT, should this be added only in the arm64 specific backend, which we introduce later ? Suzuki
Powered by blists - more mailing lists