From: Peter Zijlstra <peterz@infradead.org>
To: Dave Hansen <dave.hansen@linux.intel.com>
Cc: will.deacon@arm.com, aneesh.kumar@linux.vnet.ibm.com,
akpm@linux-foundation.org, npiggin@gmail.com,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, linux@armlinux.org.uk,
heiko.carstens@de.ibm.com
Subject: Re: [RFC][PATCH 03/11] x86/mm: Page size aware flush_tlb_mm_range()
Date: Thu, 13 Sep 2018 20:48:36 +0200 [thread overview]
Message-ID: <20180913184836.GN24142@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20180913184632.GM24142@hirez.programming.kicks-ass.net>
On Thu, Sep 13, 2018 at 08:46:32PM +0200, Peter Zijlstra wrote:
> On Thu, Sep 13, 2018 at 08:42:30PM +0200, Peter Zijlstra wrote:
> > > > +#define flush_tlb_range(vma, start, end) \
> > > > + flush_tlb_mm_range((vma)->vm_mm, start, end, \
> > > > + (vma)->vm_flags & VM_HUGETLB ? PMD_SHIFT : PAGE_SHIFT)
> > >
> > > This is safe. But, Couldn't this PMD_SHIFT also be PUD_SHIFT for a 1G
> > > hugetlb page?
> >
> > It could be, but can we tell at that point?
>
> I had me a look in higetlb.h, would something like so work?
>
> #define flush_tlb_range(vma, start, end) \
> flush_tlb_mm_range((vma)->vm_mm, start, end, \
> huge_page_shift(hstate_vma(vma)))
>
D'uh
#define flush_tlb_range(vma, start, end) \
flush_tlb_mm_range((vma)->vm_mm, start, end, \
(vma)->vm_flags & VM_HUGETLB ? huge_page_shift(hstate_vma(vma)) : PAGE_SHIFT)
next prev parent reply other threads:[~2018-09-13 18:48 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 9:21 [RFC][PATCH 00/11] my generic mmu_gather patches Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 01/11] asm-generic/tlb: Provide a comment Peter Zijlstra
2018-09-13 10:30 ` Martin Schwidefsky
2018-09-13 10:57 ` Peter Zijlstra
2018-09-13 12:18 ` Martin Schwidefsky
2018-09-13 12:39 ` Peter Zijlstra
2018-09-14 10:28 ` Martin Schwidefsky
2018-09-14 13:02 ` Peter Zijlstra
2018-09-14 14:07 ` Martin Schwidefsky
2018-09-14 16:48 ` Will Deacon
2018-09-19 11:33 ` Peter Zijlstra
2018-09-19 11:51 ` Peter Zijlstra
2018-09-19 12:23 ` Will Deacon
2018-09-19 13:12 ` Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 02/11] asm-generic/tlb: Provide HAVE_MMU_GATHER_PAGE_SIZE Peter Zijlstra
2018-09-14 16:56 ` Will Deacon
2018-09-13 9:21 ` [RFC][PATCH 03/11] x86/mm: Page size aware flush_tlb_mm_range() Peter Zijlstra
2018-09-13 17:22 ` Dave Hansen
2018-09-13 18:42 ` Peter Zijlstra
2018-09-13 18:46 ` Peter Zijlstra
2018-09-13 18:48 ` Peter Zijlstra [this message]
2018-09-13 18:49 ` Dave Hansen
2018-09-13 18:47 ` Dave Hansen
2018-09-13 9:21 ` [RFC][PATCH 04/11] asm-generic/tlb: Provide generic VIPT cache flush Peter Zijlstra
2018-09-14 16:56 ` Will Deacon
2018-09-13 9:21 ` [RFC][PATCH 05/11] asm-generic/tlb: Provide generic tlb_flush Peter Zijlstra
2018-09-13 13:09 ` Jann Horn
2018-09-13 14:06 ` Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 06/11] asm-generic/tlb: Conditionally provide tlb_migrate_finish() Peter Zijlstra
2018-09-14 16:57 ` Will Deacon
2018-09-13 9:21 ` [RFC][PATCH 07/11] arm/tlb: Convert to generic mmu_gather Peter Zijlstra
2018-09-18 14:10 ` Will Deacon
2018-09-19 11:28 ` Peter Zijlstra
2018-09-19 12:24 ` Will Deacon
2018-09-19 11:30 ` Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 08/11] ia64/tlb: Conver " Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 09/11] sh/tlb: Convert SH " Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 10/11] um/tlb: Convert " Peter Zijlstra
2018-09-13 9:21 ` [RFC][PATCH 11/11] arch/tlb: Clean up simple architectures Peter Zijlstra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180913184836.GN24142@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=aneesh.kumar@linux.vnet.ibm.com \
--cc=dave.hansen@linux.intel.com \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux@armlinux.org.uk \
--cc=npiggin@gmail.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).