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: Tue, 31 May 2016 11:11:29 +0100 Message-ID: <574D6351.9090207@arm.com> References: <1464309582-22637-1-git-send-email-shankerd@codeaurora.org> <57485203.3030407@arm.com> <1918c496-c33d-bed4-feec-b8b4f6dd404b@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Stefano Stabellini Cc: Philip Elcan , Wei Liu , Wei Chen , Vikram Sethi , Steve Capper , xen-devel , Shannon Zhao , Shanker Donthineni List-Id: xen-devel@lists.xenproject.org SGkgU3RlZmFubywKCk9uIDMxLzA1LzE2IDEwOjQwLCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6 Cj4gT24gTW9uLCAzMCBNYXkgMjAxNiwgSnVsaWVuIEdyYWxsIHdyb3RlOgo+PiBBQ1BJIGNhbiBv bmx5IGJlIGVuYWJsZWQgaW4gZXhwZXJ0IG1vZGUgYW5kIHdpbGwgYmUgYSB0ZWNoLXByZXZpZXcg Zm9yIFhlbgo+PiA0LjcuIFNvIEkgd291bGQgcmV2ZXJ0IHRoZSBwYXRjaC4gIFNQSXMgd2lsbCBu b3QgYmUgcm91dGVkLCBidXQgaXQgaXMgYmV0dGVyCj4+IHRoYW4gYSBkZWFkbG9jay4KPj4KPj4g SSB3b3VsZCBhbHNvIHJlcGxhY2UgdGhlIHBhdGNoIHdpdGggYSB3YXJuaW5nIHVudGlsIHRoZSBp c3N1ZSB3aWxsIGJlIGZpeGVkIGluCj4+IFhlbiA0LjguCj4+Cj4+IEFueSBvcGluaW9ucz8KPj4K Pj4+ICtpbnQgZ2ljX3JvdXRlX2lycV90b19ndWVzdChzdHJ1Y3QgZG9tYWluICpkLCB1bnNpZ25l ZCBpbnQgdmlycSwKPj4+ICsgICAgICAgICAgICAgICAgICAgICAgICAgICBzdHJ1Y3QgaXJxX2Rl c2MgKmRlc2MsIHVuc2lnbmVkIGludCBwcmlvcml0eSkKPj4+ICt7Cj4+PiArICAgIHVuc2lnbmVk IGxvbmcgZmxhZ3M7Cj4+PiArICAgIGludCBsb2NrID0gMCwgcmV0dmFsOwo+Pj4gKyAgICBzdHJ1 Y3QgdmdpY19pcnFfcmFuayAqcmFuazsKPj4+ICsKPj4+ICsgICAgLyogVXNlIHZjcHUwIHRvIHJl dHJpZXZlIHRoZSBwZW5kaW5nX2lycSBzdHJ1Y3QuIEdpdmVuIHRoYXQgd2Ugb25seQo+Pj4gKyAg ICAgKiByb3V0ZSBTUElzIHRvIGd1ZXN0cywgaXQgZG9lc24ndCBtYWtlIGFueSBkaWZmZXJlbmNl LiAqLwo+Pj4gKyAgICByYW5rID0gdmdpY19yYW5rX2lycShkLT52Y3B1WzBdLCB2aXJxKTsKPj4+ ICsKPj4+ICsgICAgLyogVGFrZSB0aGUgcmFuayBzcGlubG9jayB1bmxlc3MgaXQgaGFzIGFscmVh ZHkgYmVlbiB0YWtlbiBieSB0aGUKPj4+ICsgICAgICogY2FsbGVyLiAqLwo+Pj4gKyAgICBpZiAo ICFzcGluX2lzX2xvY2tlZCgmcmFuay0+bG9jaykgKSB7Cj4+Cj4+IEFGQUlDVCwgc3Bpbl9pc19s b2NrZWQgb25seSB0ZWxsIHVzIHRoYXQgc29tZW9uZSBoYXMgbG9ja2VkIHRoZSByYW5rLiBTbyB0 aGlzCj4+IHdvdWxkIGJlIHVuc2FmZS4KPgo+IFRoZSBjb2RlIGlzIGNoZWNraW5nIGlmIHRoZSBs b2NrIGlzIGFscmVhZHkgdGFrZW4sIGFuZCBpZiBpdCBpcyBub3QKPiB0YWtlbiwgaXQgd2lsbCB0 YWtlIHRoZSBsb2NrLiBUaGUgcHVycG9zZSBvZiB0aGlzIGNvZGUgaXMgdG8KPiBhbGxvdyBnaWNf cm91dGVfaXJxX3RvX2d1ZXN0IHRvIGJlIGNhbGxlZCBieSBib3RoIGZ1bmN0aW9ucyB3aGljaAo+ IGFscmVhZHkgaGF2ZSB0aGUgbG9jayBoZWxkIGFuZCBmdW5jdGlvbnMgdGhhdCBkbyBub3QuIFRo ZSBzYW1lIGdvYWwKPiBjb3VsZCBiZSBhY2hpZXZlZCBieSBkdXBsaWNhdGluZyBnaWNfcm91dGVf aXJxX3RvX2d1ZXN0IGludG8gdHdvCj4gaWRlbnRpY2FsIGZ1bmN0aW9ucyBleGNlcHQgZm9yIHRo ZSBsb2NrIHRha2luZy4gVGhhdCB3b3VsZCBiZQo+IGFkbWl0dGVkbHkgYSBtb3JlIG9idmlvdXMg Zml4IGJ1dCBhbHNvIGEgcGFydGljdWxhcmx5IHVnbHkgb25lLgoKc3Bpbl9pc19sb2NrZWQgZG9l cyBub3Qgd29yayBhcyB5b3UgZXhwZWN0LiBUaGUgZnVuY3Rpb24gd2lsbCBub3QgdGVsbCAKeW91 IGlmIHRoZSBsb2NrIHdhcyB0YWtlbiBieSB0aGUgY3VycmVudCBDUFUsIGJ1dCBpZiB0aGUgbG9j ayB3YXMgdGFrZW4gCmJ5ICphKiBDUFUuCgpJdCB3b3VsZCBiZSBwb3NzaWJsZSB0byBoYXZlIENQ VSBBIGNhbGxpbmcgdGhpcyBmdW5jdGlvbiBhbmQgaGF2ZSBDUFUgQiAKd2l0aCB0aGUgbG9jayB0 YWtlbi4gU28gdGhlIGRhdGEgc3RydWN0dXJlIHdvdWxkIGJlIGFjY2Vzc2VkIGJ5IDIgQ1BVcyAK Y29uY3VycmVudGx5LCB3aGljaCBpcyB1bnNhZmUuCgpSZWdhcmRzLAoKLS0gCkp1bGllbiBHcmFs bAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVu Lm9yZy94ZW4tZGV2ZWwK