From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Date: Mon, 31 Jul 2017 19:13:32 +0000 Subject: Re: [PATCH] efifb: allow user to disable write combined mapping. Message-Id: <487000e3-afeb-0e59-c563-0ef4b1347d8d@zytor.com> List-Id: References: <20170718060909.5280-1-airlied@redhat.com> <20170718143404.omgxrujngj2rhiya@redhat.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dave Airlie , Linus Torvalds Cc: Peter Jones , the arch/x86 maintainers , Dave Airlie , Bartlomiej Zolnierkiewicz , "linux-fbdev@vger.kernel.org" , Linux Kernel Mailing List , Andrew Lutomirski On 07/18/17 13:44, Dave Airlie wrote: > > In normal operation the console is faster with _wc. It's the side effects > on other cores that is the problem. > I'm guessing leaving these as UC- rate-limits them so it doesn't interfere with the I/O operations on the other cores... -hpa