From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Durrant Subject: [PATCH] x86/hvm: more sure APIC assist is aborted if guest EOIs APIC Date: Wed, 17 Jan 2018 07:53:53 -0500 Message-ID: <20180117125353.3301-1-paul.durrant@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ebnE6-0007cO-J0 for xen-devel@lists.xenproject.org; Wed, 17 Jan 2018 12:53:58 +0000 List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: xen-devel@lists.xenproject.org Cc: Andrew Cooper , Paul Durrant , Jan Beulich List-Id: xen-devel@lists.xenproject.org SXQgYXBwZWFycyB0aGVyZSBpcyBhIGNhc2Ugd2hlcmUgV2luZG93cyBlbmFibGVzIHRoZSBBUElD IGFzc2lzdAplbmxpZ2h0ZW5tZW50IChzZWUgTWljcm9zb2Z0IEh5cGVydmlzb3IgVG9wIExldmVs IEZ1bmN0aW9uYWwgU3BlYy4gNS4wYiwKc2VjdGlvbiAxMC4zLjUpIGJ1dCBkb2VzIG5vdCB1c2Ug aXQuIFRoaXMgc2NlbmFyaW8gaXMgcGVyZmVjdGx5IHZhbGlkCmFjY29yZGluZyB0byB0aGUgZG9j dW1lbnRhdGlvbiwgYnV0IGNhdXNlcyB0aGUgc3RhdGUgbWFjaGluZSBpbiBYZW4gdG8KYmVjb21l IGNvbmZ1c2VkIGxlYWRpbmcgdG8gYSBkb21haW5fY3Jhc2goKSBzdWNoIGFzIHRoZSBmb2xsb3dp bmc6CgooWEVOKSBkNDogVklSSURJQU4gR1VFU1RfT1NfSUQ6IHZlbmRvcjogMSBvczogNCBtYWpv cjogNiBtaW5vcjogMSBzcDogMAogICAgICBidWlsZDogMWRiMAooWEVOKSBkNDogVklSSURJQU4g SFlQRVJDQUxMOiBlbmFibGVkOiAxIHBmbjogM2ZmZmYKKFhFTikgZDR2MDogVklSSURJQU4gVlBf QVNTSVNUX1BBR0U6IGVuYWJsZWQ6IDEgcGZuOiAzZmZmZQooWEVOKSBkb21haW5fY3Jhc2ggY2Fs bGVkIGZyb20gdmlyaWRpYW4uYzo0NTIKKFhFTikgRG9tYWluIDQgKHZjcHUjMCkgY3Jhc2hlZCBv biBjcHUjMToKClRoZSBmb2xsb3dpbmcgc2VxdWVuY2Ugb2YgZXZlbnRzIGlzIGFuIGV4YW1wbGUg b2YgaG93IHRoaXMgY2FuIGhhcHBlbjoKCi0gT24gcmV0dXJuIHRvIGd1ZXN0IHZsYXBpY19oYXNf cGVuZGluZ19pcnEoKSBmaW5kcyBhIGJpdCBzZXQgaW4gdGhlIElSUi4KLSB2bGFwaWNfYWNrX3Bl bmRpbmdfaXJxKCkgY2FsbHMgdmlyaWRpYW5fc3RhcnRfYXBpY19hc3Npc3QoKSB3aGljaCBsYXRj aGVzCiAgdGhlIHZlY3Rvciwgc2V0cyB0aGUgYml0IGluIHRoZSBJU1IgYW5kIGNsZWFycyBpdCBm cm9tIHRoZSBJUlIuCi0gVGhlIGd1ZXN0IHRoZW4gcHJvY2Vzc2VzIHRoZSBpbnRlcnJ1cHQgYnV0 IEVPSXMgaXQgbm9ybWFsbHksIHRoZXJlZm9yZQogIGNsZWFyaW5nIHRoZSBiaXQgaW4gdGhlIElT Ui4KLSBPbiBuZXh0IHJldHVybiB0byBndWVzdCB2bGFwaWNfaGFzX3BlbmRpbmdfaXJxKCkgY2Fs bHMKICB2aXJpZGlhbl9jb21wbGV0ZV9hcGljX2Fzc2lzdCgpLCB3aGljaCBkaXNjb3ZlcnMgdGhl IGFzc2lzdCBiaXQgc3RpbGwgc2V0CiAgaW4gdGhlIHNoYXJlZCBwYWdlIGFuZCB0aGVyZWZvcmUg bGVhdmVzIHRoZSBsYXRjaGVkIHZlY3RvciBpbiBwbGFjZSwgYnV0CiAgYWxzbyBmaW5kcyBhbm90 aGVyIGJpdCBzZXQgaW4gdGhlIElSUi4KLSB2bGFwaWNfYWNrX3BlbmRpbmdfaXJxKCkgaXMgdGhl biBjYWxsZWQgYnV0LCBiZWNhdXNlIHRoZSBJU1IgaXMgd2FzCiAgY2xlYXJlZCBieSB0aGUgRU9J LCBhbm90aGVyIGNhbGwgaXMgbWFkZSB0byB2aXJpZGlhbl9zdGFydF9hcGljX2Fzc2lzdCgpCiAg YW5kIHRoaXMgdGhlbiBjYWxscyBkb21haW5fY3Jhc2goKSBiZWNhdXNlIGl0IGZpbmRzIHRoZSBs YXRjaGVkIHZlY3RvcgogIGhhcyBub3QgYmVlbiBjbGVhcmVkLgoKVGhpcyBwYXRjaCBhZGRzIGEg Y2FsbCB0byB2aXJpZGlhbl9hYm9ydF9hcGljX2Fzc2lzdCgpIGludG8gdmxhcGljIEVPSQpoYW5k bGVyIHRvIG1ha2Ugc3VyZSBhbnkgbGF0Y2hlZCB2ZWN0b3IgaXMgY2xlYXJlZCB3aGVuIHRoZSBJ U1IgaXMgY2xlYXJlZC4KClNpZ25lZC1vZmYtYnk6IFBhdWwgRHVycmFudCA8cGF1bC5kdXJyYW50 QGNpdHJpeC5jb20+CkNjOiBKYW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+CkNjOiBBbmRy ZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPgotLS0KIHhlbi9hcmNoL3g4Ni9o dm0vdmxhcGljLmMgfCA3ICsrKysrKysKIDEgZmlsZSBjaGFuZ2VkLCA3IGluc2VydGlvbnMoKykK CmRpZmYgLS1naXQgYS94ZW4vYXJjaC94ODYvaHZtL3ZsYXBpYy5jIGIveGVuL2FyY2gveDg2L2h2 bS92bGFwaWMuYwppbmRleCA1MGY1M2JkYWVmLi4zMTg0OTcwYzZlIDEwMDY0NAotLS0gYS94ZW4v YXJjaC94ODYvaHZtL3ZsYXBpYy5jCisrKyBiL3hlbi9hcmNoL3g4Ni9odm0vdmxhcGljLmMKQEAg LTQyMiw2ICs0MjIsMTMgQEAgdm9pZCB2bGFwaWNfRU9JX3NldChzdHJ1Y3QgdmxhcGljICp2bGFw aWMpCiAgICAgaWYgKCB2ZWN0b3IgPT0gLTEgKQogICAgICAgICByZXR1cm47CiAKKyAgICAvKgor ICAgICAqIEl0IGlzIHBvc3NpYmxlIHRoYXQgQVBJQyBhc3Npc3QgaGFzIGJlZW4gZW5hYmxlZCBi eSB0aGUgZ3Vlc3QgYnV0CisgICAgICogaXQgaGFzIGNob3NlbiBub3QgdG8gdXNlIGl0LCBieSBF T0lpbmcgbm9ybWFsbHkuIEl0IGlzIHRoZXJlZm9yZQorICAgICAqIG5lY2Vzc2FyeSB0byBhYm9y dCBhbnkgQVBJQyBhc3Npc3QgdGhhdCBtYXkgaGF2ZSBiZWVuIHN0YXJ0ZWQKKyAgICAgKiB0byBh dm9pZCBjb25mdXNpbmcgdGhlIHN0YXRlIG1hY2hpbmUuCisgICAgICovCisgICAgdmlyaWRpYW5f YWJvcnRfYXBpY19hc3Npc3QodmxhcGljX3ZjcHUodmxhcGljKSk7CiAgICAgdmxhcGljX2NsZWFy X3ZlY3Rvcih2ZWN0b3IsICZ2bGFwaWMtPnJlZ3MtPmRhdGFbQVBJQ19JU1JdKTsKIAogICAgIGlm ICggaHZtX2Z1bmNzLmhhbmRsZV9lb2kgKQotLSAKMi4xMS4wCgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4t ZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9t YWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==