From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailserv2.iuinc.com (qmailr@mailserv2.iuinc.com [206.245.164.55]) by puffin.external.hp.com (8.8.7/8.8.7) with SMTP id JAA13388 for ; Mon, 14 Jun 1999 09:21:23 -0600 Date: Mon, 14 Jun 1999 17:21:17 +0200 From: Matthew Wilcox To: Alan Cox Cc: parisc-linux@thepuffingroup.com Subject: Re: [parisc-linux] Dino PCI and I/O spaces Message-ID: <19990614172117.K31472@mencheca.ch.genedata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Alan Cox on Mon, Jun 14, 1999 at 04:15:08PM +0100 List-ID: On Mon, Jun 14, 1999 at 04:15:08PM +0100, Alan Cox wrote: > Also as a btw: PCI I/O port access will suck rocks on HP because we have > to grab a lock since it is a two stage operation. That may mean we want > to write smart copy/csum/io and ins* functions for PCI block I/O. Do we only have to grab a lock on SMP machines, or can we sleep between the two accesses? -- Matthew Wilcox "Windows and MacOS are products, contrived by engineers in the service of specific companies. Unix, by contrast, is not so much a product as it is a painstakingly compiled oral history of the hacker subculture." - N Stephenson