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[111.255.104.19]) by smtp.gmail.com with ESMTPSA id k21sm14926039pfa.63.2019.12.24.04.04.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Dec 2019 04:04:36 -0800 (PST) From: Andy Lutomirski Mime-Version: 1.0 (1.0) Subject: Re: [RFC PATCH v2 07/10] lib: vdso: don't use READ_ONCE() in __c_kernel_time() Date: Tue, 24 Dec 2019 20:04:33 +0800 Message-Id: <98C1F790-7647-4203-9B31-4B8FED8CCA12@amacapital.net> References: In-Reply-To: To: christophe leroy X-Mailer: iPhone Mail (17C54) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191224_040439_500250_1C07F7CC X-CRM114-Status: GOOD ( 10.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Arnd Bergmann , Benjamin Herrenschmidt , X86 ML , LKML , "open list:MIPS" , Paul Mackerras , Andy Lutomirski , Michael Ellerman , Thomas Gleixner , Vincenzo Frascino , linuxppc-dev , linux-arm-kernel Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Cj4gT24gRGVjIDI0LCAyMDE5LCBhdCA3OjEyIFBNLCBjaHJpc3RvcGhlIGxlcm95IDxjaHJpc3Rv cGhlLmxlcm95QGMtcy5mcj4gd3JvdGU6Cj4gCj4g77u/Cj4gCj4+IExlIDI0LzEyLzIwMTkgw6Ag MDI6NTgsIEFuZHkgTHV0b21pcnNraSBhIMOpY3JpdCA6Cj4+PiBPbiBNb24sIERlYyAyMywgMjAx OSBhdCA2OjMxIEFNIENocmlzdG9waGUgTGVyb3kKPj4+IDxjaHJpc3RvcGhlLmxlcm95QGMtcy5m cj4gd3JvdGU6Cj4+PiAKPj4+IFJFQURfT05DRSgpIGZvcmNlcyB0aGUgcmVhZCBvZiB0aGUgNjQg Yml0IHZhbHVlIG9mCj4+PiB2ZFtDU19IUkVTX0NPQVJTRV0uYmFzZXRpbWVbQ0xPQ0tfUkVBTFRJ TUVdLnNlYyBhbGx0aG91Z2gKPj4+IG9ubHkgdGhlIGxvd2VyIHBhcnQgaXMgbmVlZGVkLgo+PiBT ZWVtcyByZWFzb25hYmxlIGFuZCB2ZXJ5IHVubGlrZWx5IHRvIGJlIGhhcm1mdWwuICBUaGF0IGJl aW5nIHNhaWQsCj4+IHRoaXMgZnVuY3Rpb24gcmVhbGx5IG91Z2h0IHRvIGJlIGNvbnNpZGVyZWQg ZGVwcmVjYXRlZCAtLSAzMi1iaXQKPj4gdGltZV90IGlzIGluc3VmZmljaWVudC4KPj4gRG8geW91 IGdldCBldmVuIGJldHRlciBjb2RlIGlmIHlvdSBtb3ZlIHRoZSByZWFkIGludG8gdGhlIGlmIHN0 YXRlbWVudD8KPiAKPiBFdWggLi4uCj4gCj4gSG93IGNhbiB5b3UgcmV0dXJuIHQgd2hlbiB0aW1l IHBvaW50ZXIgaXMgTlVMTCBpZiB5b3UgcmVhZCB0IG9ubHkgd2hlbiB0aW1lIHBvaW50ZXIgaXMg bm90IE5VTEwgPwo+IAo+IAoKRHVoLCBuZXZlciBtaW5kLgoKQnV0IHRoaXMgbWVhbnMgeW91ciBw YXRjaCBtYXkgYmUgYnVnZ3k6IHlvdSBuZWVkIHRvIG1ha2Ugc3VyZSB0aGUgY29tcGlsZXIgcmV0 dXJucyB0aGUgKnNhbWUqIHZhbHVlIGl0IHN0b3Jlcy4gTWF5YmUgeW914oCZcmUgc2F2ZWQgYnkg dGhlIHBvdGVudGlhbCBhbGlhc2luZyBiZXR3ZWVuIHRoZSBkYXRhIHBhZ2UgYW5kIHRoZSBwYXNz ZWQgcGFyYW1ldGVyIGFuZCB0aGUgdmFsdWUgeW91IHJlYWQsIGJ1dCB0aGF04oCZc2EgYmFkIHRo aW5nIHRvIHJlbHkgb24uCgpUcnkgYmFycmllcigpIGFmdGVyIHRoZSByZWFkLgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1h aWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xp c3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==