From mboxrd@z Thu Jan 1 00:00:00 1970 From: pawel.moll@arm.com (Pawel Moll) Date: Mon, 14 Oct 2013 09:44:44 +0100 Subject: [PATCH 3/3] virtio: mmio: access configuration space as little-endian In-Reply-To: <1381502171-8187-4-git-send-email-marc.zyngier@arm.com> References: <1381502171-8187-1-git-send-email-marc.zyngier@arm.com> <1381502171-8187-4-git-send-email-marc.zyngier@arm.com> Message-ID: <1381740284.3247.4.camel@hornet> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, 2013-10-11 at 15:36 +0100, Marc Zyngier wrote: > virtio_mmio defines the config space to be little-endian. This is not exactly true. The configuration *registers* (magic value, queue selector etc.) are always LE, yes. The configuration *space* (the free-form stuff starting at 0x100) is still guest-endian. The spec-in-works makes everything LE and the driver will most likely get accessors for the config space. Rusty had a go at this a while ago: http://thread.gmane.org/gmane.linux.kernel.virtualization/19397 Pawe?