From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH for-next 1/2] xen/x86/alternatives: Do not use sync_core() to serialize I$ Date: Mon, 22 May 2017 14:51:25 +0100 Message-ID: References: <1495219747-26305-1-git-send-email-andrew.cooper3@citrix.com> <592305F9020000780015BBF3@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <592305F9020000780015BBF3@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: Wei Liu , Xen-devel List-Id: xen-devel@lists.xenproject.org T24gMjIvMDUvMTcgMTQ6MzgsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDE5LjA1LjE3IGF0 IDIwOjQ5LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IFdlIHVzZSBzeW5j X2NvcmUoKSBpbiB0aGUgYWx0ZXJuYXRpdmVzIGNvZGUgdG8gc3RvcCBzcGVjdWxhdGl2ZQo+PiBl eGVjdXRpb24gb2YgcHJlZmV0Y2hlZCBpbnN0cnVjdGlvbnMgYmVjYXVzZSB3ZSBhcmUgcG90ZW50 aWFsbHkgY2hhbmdpbmcKPj4gdGhlbSBhbmQgZG9uJ3Qgd2FudCB0byBleGVjdXRlIHN0YWxlIGJ5 dGVzLgo+Pgo+PiBXaGF0IGl0IGRvZXMgb24gbW9zdCBtYWNoaW5lcyBpcyBjYWxsIENQVUlEIHdo aWNoIGlzIGEgc2VyaWFsaXppbmcKPj4gaW5zdHJ1Y3Rpb24uIEFuZCB0aGF0J3MgZXhwZW5zaXZl Lgo+Pgo+PiBIb3dldmVyLCB0aGUgaW5zdHJ1Y3Rpb24gY2FjaGUgaXMgc2VyaWFsaXplZCB3aGVu IHdlJ3JlIG9uIHRoZSBsb2NhbCBDUFUKPj4gYW5kIGFyZSBjaGFuZ2luZyB0aGUgZGF0YSB0aHJv dWdoIHRoZSBzYW1lIHZpcnR1YWwgYWRkcmVzcy4KPiBEbyB5b3UgaGF2ZSB0aGUgYmFja2dyb3Vu ZCBvZiB0aGlzICJzYW1lIHZpcnR1YWwgYWRkcmVzcyIKPiBjb25zdHJhaW50PwoKVGhlcmUgd2Fz IGEgbG9uZyBMS01MIHRocmVhZCBvbiB0aGUgc3ViamVjdC4gCmh0dHBzOi8vbGttbC5vcmcvbGtt bC8yMDE2LzEyLzMvMTA4Cgo+IENhY2hlcyBhcmUgcGh5c2ljYWxseSBpbmRleGVkLCBzbyBJIGRv bid0IHNlZSB0aGUKPiBjb25uZWN0aW9uLiBZZXQgaWYgdGhlcmUgaXMgb25lLCBvdXIgc3R1YiBn ZW5lcmF0aW9uIGluIHRoZQo+IGVtdWxhdG9yIG1heSBoYXZlIGFuIGlzc3VlLgoKSSB0aGluayBo dHRwczovL2xrbWwub3JnL2xrbWwvMjAxNi8xMi8yLzQ1NCBpcyBwcm9iYWJseSB0aGUgcmVsZXZh bnQKc3RhdGVtZW50LgoKPgo+PiBTbyB0aGVuLCB3ZQo+PiBkb24ndCBuZWVkIHRoZSBzZXJpYWxp emluZyBDUFVJRCBidXQgYSBzaW1wbGUgY29udHJvbCBmbG93IGNoYW5nZS4gTGFzdAo+PiBiZWlu ZyBhY2NvbXBsaXNoZWQgd2l0aCBhIENBTEwvUkVUIHdoaWNoIHRoZSBub2lubGluZSBjYXVzZXMu Cj4+Cj4+IFN1Z2dlc3RlZC1ieTogTGludXMgVG9ydmFsZHMgPHRvcnZhbGRzQGxpbnV4LWZvdW5k YXRpb24ub3JnPgo+PiBTaWduZWQtb2ZmLWJ5OiBCb3Jpc2xhdiBQZXRrb3YgPGJwQHN1c2UuZGU+ Cj4+IFJldmlld2VkLWJ5OiBBbmR5IEx1dG9taXJza2kgPGx1dG9Aa2VybmVsLm9yZz4KPj4gW0xp bnV4IGNvbW1pdCAzNGJmYWIwZWFmMGZiNWM2ZmIxNGM2YjQwMTNiMDZjZGM3OTg0NDY2XQo+Pgo+ PiBQb3J0ZWQgdG8gWGVuLgo+Pgo+PiBTaWduZWQtb2ZmLWJ5OiBBbmRyZXcgQ29vcGVyIDxhbmRy ZXcuY29vcGVyM0BjaXRyaXguY29tPgo+IEFja2VkLWJ5OiBKYW4gQmV1bGljaCA8amJldWxpY2hA c3VzZS5jb20+Cj4gd2l0aCBhIHF1ZXN0aW9uOgo+Cj4+IC0tLSBhL3hlbi9hcmNoL3g4Ni9hbHRl cm5hdGl2ZS5jCj4+ICsrKyBiL3hlbi9hcmNoL3g4Ni9hbHRlcm5hdGl2ZS5jCj4+IEBAIC0xMjgs MTMgKzEyOCwxNCBAQCB2b2lkIGluaXRfb3JfbGl2ZXBhdGNoIGFkZF9ub3BzKHZvaWQgKmluc25z LCB1bnNpZ25lZCBpbnQgbGVuKQo+PiAgICoKPj4gICAqIFlvdSBzaG91bGQgcnVuIHRoaXMgd2l0 aCBpbnRlcnJ1cHRzIGRpc2FibGVkIG9yIG9uIGNvZGUgdGhhdCBpcyBub3QKPj4gICAqIGV4ZWN1 dGluZy4KPj4gKyAqCj4+ICsgKiAibm9pbmxpbmUiIHRvIGNhdXNlIGNvbnRyb2wgZmxvdyBjaGFu Z2UgYW5kIHRodXMgaW52YWxpZGF0ZSBJJCBhbmQKPj4gKyAqIGNhdXNlIHJlZmV0Y2ggYWZ0ZXIg bW9kaWZpY2F0aW9uLgo+PiAgICovCj4+IC1zdGF0aWMgdm9pZCAqaW5pdF9vcl9saXZlcGF0Y2gg dGV4dF9wb2tlKHZvaWQgKmFkZHIsIGNvbnN0IHZvaWQgKm9wY29kZSwgCj4+IHNpemVfdCBsZW4p Cj4+ICtzdGF0aWMgdm9pZCAqaW5pdF9vcl9saXZlcGF0Y2ggbm9pbmxpbmUKPj4gK3RleHRfcG9r ZSh2b2lkICphZGRyLCBjb25zdCB2b2lkICpvcGNvZGUsIHNpemVfdCBsZW4pCj4+ICB7Cj4+IC0g ICAgbWVtY3B5KGFkZHIsIG9wY29kZSwgbGVuKTsKPj4gLSAgICBzeW5jX2NvcmUoKTsKPj4gLQo+ PiAtICAgIHJldHVybiBhZGRyOwo+PiArICAgIHJldHVybiBtZW1jcHkoYWRkciwgb3Bjb2RlLCBs ZW4pOwo+PiAgfQo+IFdoYXQgaWYgdGhpcyBpcyBwYXRjaGluZyBtZW1jcHkoKSBpdHNlbGY/CgpU aGF0IHdvdWxkIGJlIGZpbmUsIGJlY2F1c2UgaXRzIHN0aWxsIHRoZSBzYW1lIGxpbmVhciBhZGRy ZXNzZXMsIGFuZAp3b3VsZCBzdGlsbCBiZSBzeW5jaHJvbmlzZWQuCgpJbiByZWFsaXR5IGZvciBs aXZlcGF0Y2hpbmcsIHdlIG9ubHkgbW9kaWZ5IHRoZSA1IGJ5dGUgcHJlZml4IGF0IHRoZQpoZWFk IG9mIHRoZSBmdW5jdGlvbnMsIHNvIHRoaXMgbWVtY3B5KCkgd291bGRuJ3QgYWN0dWFsbHkgaGl0 IGl0c2VsZi4KCk9mIGNvdXJzZSwgeW91IGNvdWxkIGNvbnN0cnVjdCBhIHBhdGNoIHdoaWNoIHdv dWxkIGNhdXNlIG1lbWNweSgpIHRvCmFjdHVhbGx5IGhpdCBpdHNlbGYsIGJ1dCB0aGF0IGlzbid0 IGdvaW5nIHRvIHdvcmsgYXQgYWxsLCBpcnJlc3BlY3RpdmUKb2Ygc2VyaWFsaXNpbmcgaW5zdHJ1 Y3Rpb25zLgoKfkFuZHJldwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==