From: Jason Wang <jasowang@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
jgg@mellanox.com, aarcange@redhat.com, jglisse@redhat.com,
linux-mm@kvack.org,
James Bottomley <James.Bottomley@hansenpartnership.com>,
Christoph Hellwig <hch@infradead.org>,
David Miller <davem@davemloft.net>,
linux-arm-kernel@lists.infradead.org,
linux-parisc@vger.kernel.org
Subject: Re: [PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
Date: Mon, 9 Sep 2019 10:30:20 +0800 [thread overview]
Message-ID: <868bfaed-ede4-6da8-0247-af2a03ea121d@redhat.com> (raw)
In-Reply-To: <1cb5aa8d-6213-5fce-5a77-fcada572c882@redhat.com>
On 2019/9/9 上午10:18, Jason Wang wrote:
>>>
>>> On a elder CPU Sandy Bridge without SMAP support. TX PPS doesn't see
>>> any difference.
>> Why is not Kaby Lake with SMAP off the same as Sandy Bridge?
>
>
> I don't know, I guess it was because the atomic is l
Sorry, I meant atomic costs less for Kaby Lake.
Thanks
WARNING: multiple messages have this Message-ID (diff)
From: Jason Wang <jasowang@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: aarcange@redhat.com, Christoph Hellwig <hch@infradead.org>,
linux-parisc@vger.kernel.org, kvm@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-mm@kvack.org, jglisse@redhat.com, jgg@mellanox.com,
David Miller <davem@davemloft.net>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
Date: Mon, 9 Sep 2019 10:30:20 +0800 [thread overview]
Message-ID: <868bfaed-ede4-6da8-0247-af2a03ea121d@redhat.com> (raw)
In-Reply-To: <1cb5aa8d-6213-5fce-5a77-fcada572c882@redhat.com>
On 2019/9/9 上午10:18, Jason Wang wrote:
>>>
>>> On a elder CPU Sandy Bridge without SMAP support. TX PPS doesn't see
>>> any difference.
>> Why is not Kaby Lake with SMAP off the same as Sandy Bridge?
>
>
> I don't know, I guess it was because the atomic is l
Sorry, I meant atomic costs less for Kaby Lake.
Thanks
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next prev parent reply other threads:[~2019-09-09 2:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 12:27 [PATCH 0/2] Revert and rework on the metadata accelreation Jason Wang
2019-09-05 12:27 ` [PATCH 1/2] Revert "vhost: access vq metadata through kernel virtual address" Jason Wang
2019-09-05 12:27 ` Jason Wang
2019-09-06 13:46 ` Michael S. Tsirkin
2019-09-09 7:16 ` Jason Wang
2019-09-09 7:16 ` Jason Wang
2019-09-06 13:46 ` Michael S. Tsirkin
2019-09-05 12:27 ` [PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address Jason Wang
2019-09-05 12:27 ` Jason Wang
2019-09-08 11:05 ` Michael S. Tsirkin
2019-09-08 11:05 ` Michael S. Tsirkin
2019-09-09 2:18 ` Jason Wang
2019-09-09 2:18 ` Jason Wang
2019-09-09 2:18 ` Jason Wang
2019-09-09 2:30 ` Jason Wang [this message]
2019-09-09 2:30 ` Jason Wang
2019-09-09 2:30 ` Jason Wang
2019-09-09 4:45 ` Michael S. Tsirkin
2019-09-09 4:45 ` Michael S. Tsirkin
2019-09-09 4:45 ` Michael S. Tsirkin
2019-09-09 7:23 ` Jason Wang
2019-09-09 7:23 ` Jason Wang
2019-09-09 7:23 ` Jason Wang
2019-09-08 11:05 ` Michael S. Tsirkin
2019-09-05 12:27 ` Jason Wang
2019-09-05 13:59 ` [PATCH 0/2] Revert and rework on the metadata accelreation Jason Gunthorpe
2019-09-05 13:59 ` Jason Gunthorpe
2019-09-05 13:59 ` Jason Gunthorpe
2019-09-06 10:02 ` Jason Wang
2019-09-06 10:02 ` Jason Wang
2019-09-06 10:02 ` Jason Wang
2019-09-06 13:15 ` David Miller
2019-09-09 7:18 ` Jason Wang
2019-09-09 7:18 ` Jason Wang
2019-09-09 12:15 ` Michael S. Tsirkin
2019-09-09 12:15 ` Michael S. Tsirkin
2019-09-06 13:15 ` David Miller
2019-09-07 15:03 ` Jason Gunthorpe
2019-09-07 15:03 ` Jason Gunthorpe
2019-09-07 15:03 ` Jason Gunthorpe
2019-09-09 2:29 ` Jason Wang
2019-09-09 2:29 ` Jason Wang
2019-09-09 2:29 ` Jason Wang
2019-09-06 3:21 ` [PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address Hillf Danton
2019-09-06 3:21 ` Hillf Danton
2019-09-06 12:51 ` Jason Wang
2019-09-06 12:51 ` Jason Wang
2019-09-06 12:51 ` Jason Wang
2019-09-06 3:21 ` Hillf Danton
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