From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] vhost: fix performance on LE hosts Date: Tue, 27 Oct 2015 06:32:55 -0700 (PDT) Message-ID: <20151027.063255.1140860748569110696.davem@davemloft.net> References: <1445938640-32673-1-git-send-email-mst@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, gkurz@linux.vnet.ibm.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org To: mst@redhat.com Return-path: In-Reply-To: <1445938640-32673-1-git-send-email-mst@redhat.com> Sender: kvm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: "Michael S. Tsirkin" Date: Tue, 27 Oct 2015 11:37:39 +0200 > commit 2751c9882b947292fcfb084c4f604e01724af804 ("vhost: cross-endian > support for legacy devices") introduced a minor regression: even with > cross-endian disabled, and even on LE host, vhost_is_little_endian is > checking is_le flag so there's always a branch. > > To fix, simply check virtio_legacy_is_little_endian first. > > Cc: Greg Kurz > Signed-off-by: Michael S. Tsirkin Michael, do you want me to take this via the 'net' tree?