From: Andi Kleen <ak@linux.intel.com>
To: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Uros Bizjak <ubizjak@gmail.com>,
LKML <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org>
Subject: Re: [RFC PATCH, x86]: Disable CPA cache flush for selfsnoop targets
Date: Mon, 15 Jul 2019 15:53:05 -0700 [thread overview]
Message-ID: <20190715225305.GI32439@tassilo.jf.intel.com> (raw)
In-Reply-To: <CALCETrVonxn6tDkxZnbetM9W4Uxxm7-M-tv1e7YsieX3U5OBKA@mail.gmail.com>
> I haven't tested on a real kernel with i915. Does i915 really hit
> this code path? Does it happen more than once or twice at boot?
Yes some workloads allocate/free a lot of write combined memory
for graphics objects.
-Andi
next prev parent reply other threads:[~2019-07-15 22:53 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-11 8:12 [RFC PATCH, x86]: Disable CPA cache flush for selfsnoop targets Uros Bizjak
2019-07-11 14:39 ` Andy Lutomirski
2019-07-11 19:00 ` Uros Bizjak
2019-07-15 8:24 ` Thomas Gleixner
2019-07-15 12:04 ` Uros Bizjak
2019-07-15 16:31 ` Andi Kleen
2019-07-15 18:41 ` Thomas Gleixner
2019-07-15 19:19 ` Uros Bizjak
2019-07-15 19:30 ` Thomas Gleixner
2019-07-15 19:38 ` Andi Kleen
2019-07-15 22:12 ` Andy Lutomirski
2019-07-15 22:53 ` Andi Kleen [this message]
2019-07-15 23:10 ` Andy Lutomirski
2019-07-16 0:32 ` Andi Kleen
2019-07-15 19:39 ` Andi Kleen
2019-07-15 19:44 ` Andy Lutomirski
2019-07-15 19:46 ` Thomas Gleixner
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=20190715225305.GI32439@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=dave.hansen@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=ubizjak@gmail.com \
--cc=x86@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;
as well as URLs for NNTP newsgroup(s).