From: peterz@infradead.org (Peter Zijlstra)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH V3 3/6] arm: mm: implement get_user_pages_fast
Date: Wed, 12 Mar 2014 17:32:00 +0100 [thread overview]
Message-ID: <20140312163200.GJ27965@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <1394631623-17883-4-git-send-email-steve.capper@linaro.org>
On Wed, Mar 12, 2014 at 01:40:20PM +0000, Steve Capper wrote:
> +void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
> + pmd_t *pmdp)
> +{
> + pmd_t pmd = pmd_mksplitting(*pmdp);
> + VM_BUG_ON(address & ~PMD_MASK);
> + set_pmd_at(vma->vm_mm, address, pmdp, pmd);
> +
> + /* dummy IPI to serialise against fast_gup */
> + smp_call_function(thp_splitting_flush_sync, NULL, 1);
> +}
do you really need to IPI the entire machine? Wouldn't the mm's TLB
invalidate mask be sufficient?
next prev parent reply other threads:[~2014-03-12 16:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-12 13:40 [RFC PATCH V3 0/6] get_user_pages_fast for ARM and ARM64 Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 1/6] arm: mm: Introduce special ptes for LPAE Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 2/6] arm: mm: Enable HAVE_RCU_TABLE_FREE logic Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 3/6] arm: mm: implement get_user_pages_fast Steve Capper
2014-03-12 14:18 ` Peter Zijlstra
2014-03-12 16:20 ` Steve Capper
2014-03-12 16:30 ` Peter Zijlstra
2014-03-12 16:42 ` Steve Capper
2014-03-12 16:32 ` Peter Zijlstra [this message]
2014-03-12 16:41 ` Steve Capper
2014-03-12 16:55 ` Will Deacon
2014-03-12 17:11 ` Peter Zijlstra
2014-03-14 11:47 ` Peter Zijlstra
2014-03-13 8:24 ` Steve Capper
2014-03-12 17:15 ` Catalin Marinas
2014-03-13 8:03 ` Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 4/6] arm64: Convert asm/tlb.h to generic mmu_gather Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 5/6] arm64: mm: Enable HAVE_RCU_TABLE_FREE logic Steve Capper
2014-03-12 13:40 ` [RFC PATCH V3 6/6] arm64: mm: Activate get_user_pages_fast for arm64 Steve Capper
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=20140312163200.GJ27965@twins.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.