From: Julien Grall <julien@xen.org>
To: Penny Zheng <Penny.Zheng@arm.com>, xen-devel@lists.xenproject.org
Cc: wei.chen@arm.com, Stefano Stabellini <sstabellini@kernel.org>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH v5 4/8] xen/arm: introduce put_page_nr and get_page_nr
Date: Fri, 24 Jun 2022 20:10:19 +0100 [thread overview]
Message-ID: <e9c2f30b-a9fd-5ef4-b7b1-e8ff54c6175c@xen.org> (raw)
In-Reply-To: <20220620051114.210118-5-Penny.Zheng@arm.com>
Hi Penny,
On 20/06/2022 06:11, Penny Zheng wrote:
> Later, we need to add the right amount of references, which should be
> the number of borrower domains, to the owner domain. Since we only have
> get_page() to increment the page reference by 1, a loop is needed per
> page, which is inefficient and time-consuming.
>
> To save the loop time, this commit introduces a set of new helpers
> put_page_nr() and get_page_nr() to increment/drop the page reference by nr.
>
> Signed-off-by: Penny Zheng <penny.zheng@arm.com>
> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2022-06-24 19:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-20 5:11 [PATCH v5 0/8] static shared memory on dom0less system Penny Zheng
2022-06-20 5:11 ` [PATCH v5 1/8] xen/arm: introduce static shared memory Penny Zheng
2022-06-24 17:55 ` Julien Grall
2022-06-29 5:38 ` Penny Zheng
2022-06-29 10:17 ` Julien Grall
2022-07-13 2:42 ` Penny Zheng
2022-07-13 9:09 ` Julien Grall
2022-06-29 8:39 ` Penny Zheng
2022-07-15 18:10 ` Julien Grall
2022-07-18 2:35 ` Penny Zheng
2022-06-24 19:25 ` Julien Grall
2022-06-29 8:40 ` Penny Zheng
2022-06-20 5:11 ` [PATCH v5 2/8] xen/arm: allocate static shared memory to the default owner dom_io Penny Zheng
2022-06-24 18:22 ` Julien Grall
2022-06-29 7:13 ` Penny Zheng
2022-06-29 10:34 ` Julien Grall
2022-07-04 7:20 ` Penny Zheng
2022-07-15 18:43 ` Julien Grall
2022-06-20 5:11 ` [PATCH v5 3/8] xen/arm: allocate static shared memory to a specific owner domain Penny Zheng
2022-06-24 19:07 ` Julien Grall
2022-06-29 7:49 ` Penny Zheng
2022-06-20 5:11 ` [PATCH v5 4/8] xen/arm: introduce put_page_nr and get_page_nr Penny Zheng
2022-06-24 19:10 ` Julien Grall [this message]
2022-06-20 5:11 ` [PATCH v5 5/8] xen/arm: Add additional reference to owner domain when the owner is allocated Penny Zheng
2022-06-24 19:18 ` Julien Grall
2022-06-29 8:00 ` Penny Zheng
2022-06-20 5:11 ` [PATCH v5 6/8] xen/arm: set up shared memory foreign mapping for borrower domain Penny Zheng
2022-06-20 5:11 ` [PATCH v5 7/8] xen/arm: create shared memory nodes in guest device tree Penny Zheng
2022-06-24 19:30 ` Julien Grall
2022-06-24 21:56 ` Stefano Stabellini
2022-07-04 7:45 ` Penny Zheng
2022-07-05 8:09 ` Julien Grall
2022-07-05 23:21 ` Stefano Stabellini
2022-07-06 23:52 ` Stefano Stabellini
2022-07-07 4:01 ` Penny Zheng
2022-07-08 16:40 ` Stefano Stabellini
2022-07-11 7:59 ` Penny Zheng
2022-06-20 5:11 ` [PATCH v5 8/8] xen/arm: enable statically shared memory on Dom0 Penny Zheng
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