Re: [net-next-2.6 PATCH v2] x86: Align skb w/ start of cacheline on newer core 2/Xeon Arch
From: "H. Peter Anvin" <hpa@zytor.com>
Date: 2010-06-30 21:32:54
From: "H. Peter Anvin" <hpa@zytor.com>
Date: 2010-06-30 21:32:54
On 06/30/2010 02:28 PM, David Miller wrote:
From: Jeff Kirsher <redacted> Date: Tue, 29 Jun 2010 21:38:00 -0700quoted
From: Alexander Duyck <redacted> x86 architectures can handle unaligned accesses in hardware, and it has been shown that unaligned DMA accesses can be expensive on Nehalem architectures. As such we should overwrite NET_IP_ALIGN to resolve this issue. Cc: Thomas Gleixner <redacted> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Signed-off-by: Alexander Duyck <redacted> Signed-off-by: Jeff Kirsher <redacted>Can I get an x86'er ACK on this? I can merge it in via net-next-2.6 which is probably most convenient for people who want to see the networking performance effects of this change.
Acked-by: H. Peter Anvin <hpa@zytor.com> -hpa