From: Christoffer Dall <christoffer.dall@linaro.org>
To: kvm-ia64@vger.kernel.org
Subject: Re: [PATCH v16 00/10] KVM/arm/arm64/x86: dirty page logging for ARMv7/8 (3.18.0-rc2)
Date: Wed, 21 Jan 2015 11:08:23 +0000 [thread overview]
Message-ID: <20150121110823.GB15076@cbox> (raw)
In-Reply-To: <1421366341-26012-1-git-send-email-m.smarduch@samsung.com>
On Thu, Jan 15, 2015 at 03:58:51PM -0800, Mario Smarduch wrote:
> Patch series adds support for armv7/8 dirty page logging. As we move
> towards generic dirty page logging interface we move some common code to
> generic layer shared by x86, armv7 and armv8.
>
> armv7/8 Dirty page logging implementation overivew-
> - initially write protects memory region 2nd stage page tables
> - read dirty page log and again write protect dirty pages for next pass.
> - second stage huge pages are dissolved into normal pages to keep track of
> dirty memory at page granularity. Tracking at huge page granularity
> limits granularity of marking dirty memory and migration to a light memory
> load. Small page size logging supports higher memory dirty rates, enables
> rapid migration.
>
> armv7 supports 2MB Huge page, and armv8 supports 2MB (4kb) and
> 512MB (64kb)
> - In the event migration is canceled, normal behavior is resumed huge pages
> are rebuilt over time.
>
Thanks, applied.
-Christoffer
next prev parent reply other threads:[~2015-01-21 11:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-15 23:58 [PATCH v16 00/10] KVM/arm/arm64/x86: dirty page logging for ARMv7/8 (3.18.0-rc2) Mario Smarduch
2015-01-21 11:08 ` Christoffer Dall [this message]
2015-01-21 18:38 ` Mario Smarduch
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