From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E58AC2BA83 for ; Fri, 14 Feb 2020 15:45:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3B7E82467D for ; Fri, 14 Feb 2020 15:45:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="i3xZwWjZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3B7E82467D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=L1J2Eezu8EypWhkLy/JlQCQb6lhskrTNlIpGM22yrXI=; b=i3xZwWjZ6JpqXH IKyBp73MSaAC0zML8HK4Q+CRb+aHrlWl/gSZjsUpOHrP4JeXCi++I9m5qzqh1yNFU6bDFZyusTuoM xD/tueZspVh887HK6RH2BrK642nJrsDPbmLYBDHKXJ7Je5xRZ1pMGr1/cnvt97S7L65yWcD+wp4cr yZirWXVSLvS+u6HGvO0Z7+xY5/cgRbV5YPCJlkAmYJMSkksM/L05dkf9QXRBWaD36mk9uUa6AsCvp Bt/0VivmB3i4qJD5qA4DJ5Z7Wkvama0uJoiG71FV8L/rZOvZo+mW4y3MGAIBfbpl1dpvz1pSc7rd0 IfysFe68ouYH/6aEH+aw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2d9o-0000DA-6f; Fri, 14 Feb 2020 15:45:32 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2d9k-000081-V4 for linux-arm-kernel@lists.infradead.org; Fri, 14 Feb 2020 15:45:30 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CA4AC328; Fri, 14 Feb 2020 07:45:26 -0800 (PST) Received: from localhost (e108754-lin.cambridge.arm.com [10.1.198.52]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6B5D83F68E; Fri, 14 Feb 2020 07:45:26 -0800 (PST) Date: Fri, 14 Feb 2020 15:45:25 +0000 From: Ionela Voinescu To: Thomas Gleixner Subject: Re: [PATCH v3 7/7] clocksource/drivers/arm_arch_timer: validate arch_timer_rate Message-ID: <20200214154525.GA21875@arm.com> References: <20200211184542.29585-1-ionela.voinescu@arm.com> <20200211184542.29585-8-ionela.voinescu@arm.com> <87mu9mgg41.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <87mu9mgg41.fsf@nanos.tec.linutronix.de> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200214_074529_049120_F8C75E75 X-CRM114-Status: GOOD ( 18.20 ) 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: mark.rutland@arm.com, maz@kernel.org, suzuki.poulose@arm.com, peterz@infradead.org, catalin.marinas@arm.com, linux-pm@vger.kernel.org, linux-doc@vger.kernel.org, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, mingo@redhat.com, viresh.kumar@linaro.org, linux-arm-kernel@lists.infradead.org, sudeep.holla@arm.com, will@kernel.org, valentin.schneider@arm.com, lukasz.luba@arm.com 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 SGkgVGhvbWFzLAoKT24gRnJpZGF5IDE0IEZlYiAyMDIwIGF0IDAxOjM1OjU4ICgrMDEwMCksIFRo b21hcyBHbGVpeG5lciB3cm90ZToKPiBJb25lbGEgVm9pbmVzY3UgPGlvbmVsYS52b2luZXNjdUBh cm0uY29tPiB3cml0ZXM6Cj4gCj4gPiBGcm9tOiBWYWxlbnRpbiBTY2huZWlkZXIgPHZhbGVudGlu LnNjaG5laWRlckBhcm0uY29tPgo+ID4KPiA+IFVzaW5nIGFuIGFyY2ggdGltZXIgd2l0aCBhIGZy ZXF1ZW5jeSBvZiBsZXNzIHRoYW4gMU1IeiBjYW4gcmVzdWx0IGluIGFuCj4gPiBpbmNvcnJlY3Qg ZnVuY3Rpb25hbGl0eSBvZiB0aGUgc3lzdGVtIHdoaWNoIGFzc3VtZXMgYSByZWFzb25hYmxlIHJh dGUuCj4gPgo+ID4gT25lIGV4YW1wbGUgaXMgdGhlIHVzZSBvZiBhY3Rpdml0eSBtb25pdG9ycyBm b3IgZnJlcXVlbmN5IGludmFyaWFuY2UKPiA+IHdoaWNoIHVzZXMgdGhlIHJhdGUgb2YgdGhlIGFy Y2ggdGltZXIgYXMgdGhlIGtub3duIHJhdGUgb2YgdGhlIGNvbnN0YW50Cj4gPiBjeWNsZSBjb3Vu dGVyIGluIGNvbXB1dGluZyBpdHMgcmF0aW8gY29tcGFyZWQgdG8gdGhlIG1heGltdW0gZnJlcXVl bmN5Cj4gPiBvZiBhIENQVS4gRm9yIGFyY2ggdGltZXIgZnJlcXVlbmNpZXMgbGVzcyB0aGFuIDFN SHogdGhpcyByYXRpbyBjb3VsZAo+ID4gZW5kIHVwIGJlaW5nIDAgd2hpY2ggaXMgYW4gaW52YWxp ZCB2YWx1ZSBmb3IgaXRzIHVzZS4KPiA+Cj4gPiBUaGVyZWZvcmUsIHdhcm4gaWYgdGhlIGFyY2gg dGltZXIgcmF0ZSBpcyBiZWxvdyAxTUh6IHdoaWNoIGNvbnRyYXZlbmVzCj4gPiB0aGUgcmVjb21t ZW5kZWQgYXJjaGl0ZWN0dXJlIGludGVydmFsIG9mIDEgdG8gNTBNSHouCj4gPgo+ID4gU2lnbmVk LW9mZi1ieTogSW9uZWxhIFZvaW5lc2N1IDxpb25lbGEudm9pbmVzY3VAYXJtLmNvbT4KPiAKPiBT byB0aGlzIHBhdGNoIGlzIGZyb20gVmFsZW50aW4uIFdoZXJlIGlzIGhpcyBTaWduZWQtb2ZmLWJ5 Pwo+IAoKWWVzLCBzb3JyeSBhYm91dCB0aGlzLiBUaGlzIHdhcyBiYXNlZCBvbiBhIGRpZmYgdGhh dCBWYWxlbnRpbiBwcm92aWRlZAppbiB2Mi4gSSdsbCBjaGFuZ2UgdGhlIGF1dGhvciBhcyBhZ3Jl ZWQgYXQ6Cmh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2xrbWwvMjAyMDAyMTIxMDMyNDkuR0ExOTA0 MUBhcm0uY29tLwoKPiA+ICAKPiA+ICtzdGF0aWMgaW50IHZhbGlkYXRlX3RpbWVyX3JhdGUodm9p ZCkKPiA+ICt7Cj4gPiArCWlmICghYXJjaF90aW1lcl9yYXRlKQo+ID4gKwkJcmV0dXJuIC1FSU5W QUw7Cj4gPiArCj4gPiArCS8qIEFyY2ggdGltZXIgZnJlcXVlbmN5IDwgMU1IeiBjYW4gY2F1c2Ug dHJvdWJsZSAqLwo+ID4gKwlXQVJOX09OKGFyY2hfdGltZXJfcmF0ZSA8IDEwMDAwMDApOwo+IAo+ IFRoaXMgZG9lcyBub3QgbWFrZSBzZW5zZSB0byBtZS4gSWYgdGhlIHJhdGUgaXMgb3V0IG9mIGJv dW5kcyB0aGVuIHdoeQo+IHdhcm4gYW4ganVzdCBjb250aW51ZSBpbnN0ZWFkIG9mIG1ha2luZyBp dCBmYWlsPwo+IAoKQmVjYXVzZSBpdCdzIG5vdCBhIGhhcmQgcmVzdHJpY3Rpb24sIGl0J3MganVz dCBhdHlwaWNhbCBmb3IgdGhlIHJhdGUgdG8KYmUgYmVsb3cgMU1oei4gVGhlIHNwZWMgb25seSBt ZW50aW9ucyBhIHR5cGljYWwgcmFuZ2Ugb2YgMSB0byA1ME1IeiBhbmQKdGhlIHdhcm5pbmcgaXMg b25seSBoZXJlIHRvIGZsYWcgYSBwb3RlbnRpYWxseSBwcm9ibGVtYXRpYyByYXRlLCBiZWxvdwp3 aGF0IGlzIGFzc3VtZWQgdHlwaWNhbCBpbiB0aGUgc3BlYy4KCkluIFsxXSwgd2hlcmUgSSdtIGFj dHVhbGx5IHJlbHlpbmcgb24gYXJjaF90aW1lcl9yYXRlIGJlaW5nIGhpZ2hlciB0aGFuCnRoYW4g MS9TQ0hFRF9DQVBBQ0lUWV9TQ0FMRcKyIG9mIHRoZSBtYXhpbXVtIGZyZXF1ZW5jeSwgSSBhbSBt YWtpbmcgaXQKZmFpbCwgYXMsIGZvciB0aGF0IHNjZW5hcmlvLCBpdCBpcyBhIGhhcmQgcmVzdHJp Y3Rpb24uCgoKKwkgKiBXZSB1c2UgYSBmYWN0b3Igb2YgMiAqIFNDSEVEX0NBUEFDSVRZX1NISUZU IC0+IFNDSEVEX0NBUEFDSVRZX1NDQUxFwrIKKwkgKiBpbiBvcmRlciB0byBlbnN1cmUgYSBnb29k IHJlc29sdXRpb24gZm9yIGFyY2hfbWF4X2ZyZXFfc2NhbGUgZm9yCisJICogdmVyeSBsb3cgYXJj aCB0aW1lciBmcmVxdWVuY2llcyAodXAgdG8gdGhlIEtIeiByYW5nZSB3aGljaCBzaG91bGQgYmUK KwkgKiB1bmxpa2VseSkuCisJICovCisJcmF0aW8gPSAodTY0KWFyY2hfdGltZXJfZ2V0X3JhdGUo KSA8PCAoMiAqIFNDSEVEX0NBUEFDSVRZX1NISUZUKTsKKwlyYXRpbyA9IGRpdjY0X3U2NChyYXRp bywgbWF4X2ZyZXFfaHopOworCWlmICghcmF0aW8pIHsKKwkJcHJfZXJyKCJTeXN0ZW0gdGltZXIg ZnJlcXVlbmN5IHRvbyBsb3cuXG4iKTsKKwkJcmV0dXJuIC1FSU5WQUw7CisJfQorCgpbMV0gaHR0 cHM6Ly9sb3JlLmtlcm5lbC5vcmcvbGttbC84OTMzOTUwMS01ZWU0LWU4NzEtMzA3Ni1jOGIwMmM2 ZmJmNmVAYXJtLmNvbS8KClRoYW5rcywKSW9uZWxhLgoKPiBUaGFua3MsCj4gCj4gICAgICAgICB0 Z2x4CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51 eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVh ZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1h cm0ta2VybmVsCg==