From: ashoks@broadcom.com (Ashok Kumar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 1/2] arm64: Defer dcache flush in __cpu_copy_user_page
Date: Thu, 17 Dec 2015 01:38:31 -0800 [thread overview]
Message-ID: <1450345112-3657-2-git-send-email-ashoks@broadcom.com> (raw)
In-Reply-To: <1450345112-3657-1-git-send-email-ashoks@broadcom.com>
Defer dcache flushing to __sync_icache_dcache by calling
flush_dcache_page which clears PG_dcache_clean flag.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ashok Kumar <ashoks@broadcom.com>
---
arch/arm64/mm/copypage.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/mm/copypage.c b/arch/arm64/mm/copypage.c
index 13bbc3be..22e4cb4 100644
--- a/arch/arm64/mm/copypage.c
+++ b/arch/arm64/mm/copypage.c
@@ -24,8 +24,9 @@
void __cpu_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
{
+ struct page *page = virt_to_page(kto);
copy_page(kto, kfrom);
- __flush_dcache_area(kto, PAGE_SIZE);
+ flush_dcache_page(page);
}
EXPORT_SYMBOL_GPL(__cpu_copy_user_page);
--
2.1.0
next prev parent reply other threads:[~2015-12-17 9:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-17 9:38 [PATCH v4 0/2] arm64: change PoC D-cache flush to PoU Ashok Kumar
2015-12-17 9:38 ` Ashok Kumar [this message]
2015-12-17 9:38 ` [PATCH v4 2/2] arm64: Use PoU cache instr for I/D coherency Ashok Kumar
2015-12-17 11:51 ` [PATCH v4 0/2] arm64: change PoC D-cache flush to PoU Will Deacon
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=1450345112-3657-2-git-send-email-ashoks@broadcom.com \
--to=ashoks@broadcom.com \
--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 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).