From: John David Anglin <dave.anglin@bell.net>
To: Helge Deller <deller@gmx.de>, linux-parisc@vger.kernel.org
Subject: Re: [PATCH] parisc: improve cach flushing in arch_sync_dma_for_cpu()
Date: Mon, 15 May 2023 18:28:17 -0400 [thread overview]
Message-ID: <4664024c-1312-64b5-5150-e60bf3fc49bb@bell.net> (raw)
In-Reply-To: <ZGJ8ZcPZbckX7VNB@p100>
On 2023-05-15 2:39 p.m., Helge Deller wrote:
> + case DMA_BIDIRECTIONAL:
> + flush_kernel_dcache_range(addr, size);
> + purge_kernel_dcache_range_asm(addr, addr + size);
I don't think flush and purge are both needed.
Dave
--
John David Anglin dave.anglin@bell.net
next prev parent reply other threads:[~2023-05-15 22:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 18:39 [PATCH] parisc: improve cach flushing in arch_sync_dma_for_cpu() Helge Deller
2023-05-15 22:28 ` John David Anglin [this message]
2023-05-16 7:09 ` Helge Deller
2023-05-16 14:20 ` John David Anglin
2023-05-16 18:00 ` Helge Deller
2023-05-19 16:07 ` John David Anglin
2023-05-20 5:10 ` Helge Deller
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=4664024c-1312-64b5-5150-e60bf3fc49bb@bell.net \
--to=dave.anglin@bell.net \
--cc=deller@gmx.de \
--cc=linux-parisc@vger.kernel.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