From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kirill A. Shutemov" Subject: Re: [PATCH] x86: enable RCU based table free when PARAVIRT Date: Thu, 24 Aug 2017 01:36:38 +0300 Message-ID: <20170823223637.bjke4w3wpolrn7md__6650.52086483247$1503549801$gmane$org@black.fi.intel.com> References: <20170823134521.5068-1-vkuznets@redhat.com> <20170823195955.wnyg2dcv4c23kdoj@node.shutemov.name> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dkeH0-0001st-J0 for xen-devel@lists.xenproject.org; Wed, 23 Aug 2017 22:37:18 +0000 Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Linus Torvalds Cc: Juergen Gross , Stephen Hemminger , "H. Peter Anvin" , Peter Zijlstra , Andrew Cooper , Boris Ostrovsky , the arch/x86 maintainers , Linux Kernel Mailing List , Steven Rostedt , Andy Lutomirski , Jork Loeser , Ingo Molnar , xen-devel , "Kirill A. Shutemov" , Vitaly Kuznetsov , KY Srinivasan , Thomas Gleixner List-Id: xen-devel@lists.xenproject.org T24gV2VkLCBBdWcgMjMsIDIwMTcgYXQgMDg6Mjc6MThQTSArMDAwMCwgTGludXMgVG9ydmFsZHMg d3JvdGU6Cj4gT24gV2VkLCBBdWcgMjMsIDIwMTcgYXQgMTI6NTkgUE0sIEtpcmlsbCBBLiBTaHV0 ZW1vdgo+IDxraXJpbGxAc2h1dGVtb3YubmFtZT4gd3JvdGU6Cj4gPgo+ID4gSW4gdGhpcyBjYXNl IHdlIG5lZWQgcGVyZm9ybWFuY2UgbnVtYmVycyBmb3IgIVBBUkFWSVJUIGtlcm5lbC4KPiAKPiBZ ZXMuCj4gCj4gPiBOdW1iZXJzIGZvciB0aWdodCBsb29wIG9mICJtbWFwKE1BUF9QT1BVTEFURSk7 IG11bm1hcCgpIiBtaWdodCBiZQo+ID4gaW50ZXJlc3RpbmcgdG9vIGZvciB3b3JzdCBjYXNlIHNj ZW5hcmlvLgo+IAo+IEFjdHVhbGx5LCBJIGRvbid0IHRoaW5rIHlvdSB3YW50IHRvIHBvcHVsYXRl IGFsbCB0aGUgcGFnZXMuIFlvdSBqdXN0Cj4gd2FudCB0byBwb3B1bGF0ZSAqb25lKiBwYWdlLCBp biBvcmRlciB0byBidWlsZCB1cCB0aGUgcGFnZSBkaXJlY3RvcnkKPiBzdHJ1Y3R1cmUsIG5vdCBh bGxvY2F0ZSBhbGwgdGhlIGZpbmFsIHBvaW50cy4KPiAKPiBBbmQgd2Ugb25seSBmcmVlIHRoZSBh Y3R1YWwgcGFnZSB0YWJsZXMgd2hlbiB0aGVyZSBpcyBub3RoaW5nIGFyb3VuZCwKPiBzbyBpdCBz aG91bGQgYmUgYXQgbGVhc3QgYSAyTUItYWxpZ25lZCByZWdpb24gZXRjLgo+IAo+IFNvIHlvdSBz aG91bGQgZG8gYSAqYmlnKiBhbGxvY2F0aW9uLCBhbmQgdGhlbiB0b3VjaCBhIHNpbmdsZSBwYWdl IGluCj4gdGhlIG1pZGRsZSwgYW5kIHRoZW4gbWlubWFwIGl0IC0gdGhhdCBzaG91bGQgZ2l2ZSB5 b3UgbWF4aW1hbCBwYWdlCj4gdGFibGUgYWN0aXZpdHkuIE90aGVyd2lzZSB0aGUgcGFnZSB0YWJs ZXMgd2lsbCBnZW5lcmFsbHkganVzdCBzdGF5Cj4gYXJvdW5kLgo+IAo+IFJlYWxpc3RpY2FsbHks IGl0J3MgbWFpbmx5IGV4aXQoKSB0aGF0IGZyZWVzIHBhZ2UgdGFibGVzLiBZZXMsIHlvdSBtYXkK PiBoYXZlIGEgZmV3IHBhZ2UgdGFibGVzIGZyZWUnZCBieSBhIG5vcm1hbCBtdW5tYXAoKSwgYnV0 IGl0J3MgdXN1YWxseQo+IHZlcnkgbGltaXRlZC4gV2hpY2ggaXMgd2h5IEkgc3VnZ2VzdGVkIHRo YXQgc2NyaXB0LWhlYXZ5IHRoaW5nIHdpdGgKPiBsb3RzIG9mIHNtYWxsIGV4ZWN1dGFibGVzLiBU aGF0IHRlbmRzIHRvIGJlIHRoZSBtYWluIHJlYWxpc3RpYyBsb2FkCj4gdGhhdCByZWFsbHkgY2F1 c2VzIGEgdG9uIG9mIHBhZ2UgZGlyZWN0b3J5IGFjdGl2aXR5LgoKQmVsb3cgaXMgdGVzdCBjYXNl cyB0aGF0IGFsbG9jYXRlcyBhIGxvdCBvZiBwYWdlIHRhYmxlcyBhbmQgbWVhc3VhcmUKZm9yay9l eGl0IHRpbWUuIChJJ20gbm90IGVudGlyZWx5IHN1cmUgaXQncyB0aGUgYmVzdCB3YXkgdG8gc3Ry ZXNzIHRoZQpjb2RlcGF0aC4pCgpVbnBhdGNoZWQ6CWF2ZXJhZ2UgNC44MzIycywgc3RkZGV2CTAu MTE0cwpQYXRjaGVkOglhdmVyYWdlIDQuODM2MnMsIHN0ZGRldgkwLjExMXMKCkJvdGggd2l0aG91 dCBQQVJBVklSVC4gUGF0Y2ggaXMgbW9kaWZpZWQgdG8gZW5hYmxlIEhBVkVfUkNVX1RBQkxFX0ZS RUUgZm9yCiFQQVJBVklSVCB0b28uCgpUaGUgdGVzdC1jYXNlIHJlcXVpcmVzICJlY2hvIDEgPiAv cHJvYy9zeXMvdm0vb3ZlcmNvbW1pdF9tZW1vcnkiLgoKI2luY2x1ZGUgPGFzc2VydC5oPgojaW5j bHVkZSA8ZXJybm8uaD4KI2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxzdGRsaWIuaD4KI2lu Y2x1ZGUgPHRpbWUuaD4KI2luY2x1ZGUgPHVuaXN0ZC5oPgojaW5jbHVkZSA8c3lzL21tYW4uaD4K I2luY2x1ZGUgPHN5cy9wcmN0bC5oPgojaW5jbHVkZSA8c3lzL3R5cGVzLmg+CiNpbmNsdWRlIDxz eXMvd2FpdC5oPgoKI2RlZmluZSBQVURfU0laRSAoMVVMIDw8IDMwKQojZGVmaW5lIFBNRF9TSVpF ICgxVUwgPDwgMjEpCgojZGVmaW5lIE5SX1BVRCA0MDk2CgojZGVmaW5lIE5TRUNfUEVSX1NFQwkx MDAwMDAwMDAwTAoKaW50IG1haW4odm9pZCkKewoJY2hhciAqYWRkciA9IE5VTEw7Cgl1bnNpZ25l ZCBsb25nIGksIGo7CglzdHJ1Y3QgdGltZXNwZWMgc3RhcnQsIGZpbmlzaDsKCWxvbmcgbG9uZyBu c2VjOwoKCXByY3RsKFBSX1NFVF9USFBfRElTQUJMRSk7Cglmb3IgKGkgPSAwOyBpIDwgTlJfUFVE IDsgaSsrKSB7CgkJYWRkciA9IG1tYXAoYWRkciArIFBVRF9TSVpFLCBQVURfU0laRSwgUFJPVF9X UklURXxQUk9UX1JFQUQsCgkJCQlNQVBfQU5PTllNT1VTfE1BUF9QUklWQVRFLCAtMSwgMCk7CgkJ aWYgKGFkZHIgPT0gTUFQX0ZBSUxFRCkgewoJCQlwZXJyb3IoIm1tYXAiKTsKCQkJYnJlYWs7CgkJ fQoKCQlmb3IgKGogPSAwOyBqIDwgUFVEX1NJWkU7IGogKz0gUE1EX1NJWkUpCgkJCWFzc2VydChh ZGRyW2pdID09IDApOwoJfQoKCWZvciAoaSA9IDA7IGkgPCAxMDsgaSsrKSB7CgkJcGlkX3QgcGlk OwoJCQoJCWNsb2NrX2dldHRpbWUoQ0xPQ0tfTU9OT1RPTklDLCAmc3RhcnQpOwoJCXBpZCA9IGZv cmsoKTsKCQlpZiAocGlkID09IC0xKQoJCQlwZXJyb3IoImZvcmsiKTsKCQlpZiAoIXBpZCkKCQkJ ZXhpdCgwKTsKCQl3YWl0KE5VTEwpOwoJCWNsb2NrX2dldHRpbWUoQ0xPQ0tfTU9OT1RPTklDLCAm ZmluaXNoKTsKCgkJbnNlYyA9IChmaW5pc2gudHZfc2VjIC0gc3RhcnQudHZfc2VjKSAqIE5TRUNf UEVSX1NFQyArCgkJCShmaW5pc2gudHZfbnNlYyAtIHN0YXJ0LnR2X25zZWMpOwoJCXByaW50Zigi JWxsZFxuIiwgbnNlYyk7Cgl9CgoJcmV0dXJuIDA7Cn0KLS0gCiBLaXJpbGwgQS4gU2h1dGVtb3YK Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZl bCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6Ly9saXN0cy54ZW4u b3JnL3hlbi1kZXZlbAo=