From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] arm/acpi: Fix the deadlock in function vgic_lock_rank() Date: Fri, 27 May 2016 14:56:19 +0100 Message-ID: <57485203.3030407@arm.com> References: <1464309582-22637-1-git-send-email-shankerd@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1464309582-22637-1-git-send-email-shankerd@codeaurora.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Shanker Donthineni , xen-devel Cc: Philip Elcan , Vikram Sethi , Wei Chen , Steve Capper , Stefano Stabellini , Shannon Zhao List-Id: xen-devel@lists.xenproject.org SGVsbG8gU2hhbmtlciwKCk9uIDI3LzA1LzE2IDAxOjM5LCBTaGFua2VyIERvbnRoaW5lbmkgd3Jv dGU6Cj4gQ29tbWl0IDlkNzdiM2MwMWQxMjYxYyAoQ29uZmlndXJlIFNQSSBpbnRlcnJ1cHQgdHlw ZSBhbmQgcm91dGUgdG8KPiBEb20wIGR5bmFtaWNhbGx5KSBjYXVzaW5nIGRlYWQgbG9vcCBpbnNp ZGUgdGhlIHNwaW5sb2NrIGZ1bmN0aW9uLgo+IE5vdGUgdGhhdCBzcGlubG9ja3MgaW4gWEVOIGFy ZSBub3QgcmVjdXJzaXZlLiBSZS1hY3F1aXJpbmcgYSBzcGlubG9jawo+IHRoYXQgaGFzIGFscmVh ZHkgaGVsZCBieSBjYWxsaW5nIENQVSBsZWFkcyB0byBkZWFkbG9jay4gVGhpcyBoYXBwZW5zCj4g d2hlbmV2ZXIgZG9tMCBkb2VzIHdyaXRlcyB0byBHSUNEIHJlZ3MgSVNFTkFCTEVSL0lDRU5BQkxF Ui4KClRoYW5rIHlvdSBmb3Igc3BvdHRpbmcgaXQsIEkgaGF2ZSBub3Qgbm90aWNlZCBpdCB3aGls ZSBJIHdhcyAgcmV2aWV3aW5nLCAKb25seSB0ZXN0ZWQgb24gYSBtb2RlbCB3aXRob3V0IGFueSBT UElzLgoKPiBUaGUgZm9sbG93aW5nIGNhbGwgdHJhY2UgZXhwbGFpbnMgdGhlIHByb2JsZW0uCj4K PiBET00wIHdyaXRlcyBHSUNEX0lTRU5BQkxFUi9HSUNEX0lDRU5BQkxFUgo+ICAgIHZnaWNfdjNf ZGlzdHJfY29tbW9uX21taW9fd3JpdGUoKQo+ICAgICAgdmdpY19sb2NrX3JhbmsoKSAgLS0+ICBh Y3F1aXJpbmcgZmlyc3QgdGltZQo+ICAgICAgICB2Z2ljX2VuYWJsZV9pcnFzKCkKPiAgICAgICAg ICByb3V0ZV9pcnFfdG9fZ3Vlc3QoKQo+ICAgICAgICAgICAgZ2ljX3JvdXRlX2lycV90b19ndWVz dCgpCj4gICAgICAgICAgICAgIHZnaWNfZ2V0X3RhcmdldF92Y3B1KCkKPiAgICAgICAgICAgICAg ICB2Z2ljX2xvY2tfcmFuaygpICAtLT4gIGF0dGVtcGluZyBhY3F1aXJlZCBsb2NrCj4KPiBUaGUg c2ltcGxlIGZpeCByZWxlYXNlIHNwaW5sb2NrIGJlZm9yZSBjYWxsaW5nIHZnaWNfZW5hYmxlX2ly cXMoKQo+IGFuZCB2Z2ljX2Rpc2FibGVfaXJxcygpLgoKWW91IHNob3VsZCBleHBsYWluIHdoeSB5 b3UgdGhpbmsgaXQgaXMgdmFsaWQgdG8gcmVsZWFzZSB0aGUgbG9jayBlYXJsaWVyLgoKSW4gdGhp cyBjYXNlLCBJIHRoaW5rIHRoZSBmaXggaXMgbm90IGNvcnJlY3QgYmVjYXVzZSB0aGUgbG9jayBp cyAKcHJvdGVjdGluZyBib3RoIHRoZSByZWdpc3RlciB2YWx1ZSBhbmQgdGhlIGludGVybmFsIHN0 YXRlIGluIFhlbiAKKG1vZGlmaWVkIGJ5IHZnaWNfZW5hYmxlX2lycXMpLiBCeSByZWxlYXNpbmcg dGhlIGxvY2sgZWFybGllciwgdGhleSBtYXkgCmJlY29tZSBpbmNvbnNpc3RlbnQgaWYgYW5vdGhl ciB2Q1BVIGlzIGRpc2FibGluZyB0aGUgSVJRcyBhdCB0aGUgc2FtZSB0aW1lLgoKSSBjYW5ub3Qg ZmluZCBhbiBlYXN5IGZpeCB3aGljaCBkb2VzIG5vdCBpbnZvbHZlIHJlbGVhc2UgdGhlIGxvY2su IFdoZW4gCkkgd2FzIHJldmlld2luZyB0aGlzIHBhdGNoLCBJIHN1Z2dlc3RlZCB0byBzcGxpdCB0 aGUgSVJRIGNvbmZpZ3VyYXRpb24gCmZyb20gdGhlIHJvdXRpbmcuCgpUaGUgcm91dGluZyAoY2Fs bCB0byByb3V0ZV9pcnFfdG9fZ3Vlc3QpIHdpbGwgYmUgZG9uZSBiZWZvcmUgRE9NMCBpcyAKYm9v dGluZy4gVGhlIElSUSBjb25maWd1cmF0aW9uIHdpbGwgYmUgZG9uZSBpbiB0aGUgSUNGR1IgcmVn aXN0ZXIuCgpUaGlzIHdpbGwgYWxzbyBoZWxwIGZvciBQQ0ktcGFzc3Rocm91Z2ggYXMgdGhlIGd1 ZXN0IHdpbGwgaGF2ZSB0byAKY29uZmlndXJlIHRoZSBTUElzICh3ZSBjYW4ndCBleHBlY3QgRE9N MCBkb2luZyBpdCBmb3IgaXQpLiBCdXQgdGhlIApyb3V0aW5nIHdpbGwgYmUgZG9uZSBhaGVhZC4K ClRoaXMgd291bGQgcmVzb2x2ZSB0aGUgbG9ja2luZyBpc3N1ZSwgaG93ZXZlciBpdCBpcyBhIGJp ZyB0YXNrLiBGZWVsIApmcmVlIHRvIHN1Z2dlc3QgYSBzaW1wbGVyIG9uZS4KClJlZ2FyZHMsCgot LSAKSnVsaWVuIEdyYWxsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0 dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=