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[88.21.103.182]) by smtp.gmail.com with ESMTPSA id n188sm1991006wme.14.2019.12.02.22.05.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Dec 2019 22:05:40 -0800 (PST) Subject: Re: [PATCH v2 0/4] Expose GT CNTFRQ as a CPU property to support AST2600 To: Andrew Jeffery , qemu-arm@nongnu.org References: <20191203041440.6275-1-andrew@aj.id.au> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <6540201e-b8dc-753b-cdaf-5d7da8716714@redhat.com> Date: Tue, 3 Dec 2019 07:05:38 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20191203041440.6275-1-andrew@aj.id.au> Content-Language: en-US X-MC-Unique: 9Hha_srfMvmXNprJRUt5Lg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, joel@jms.id.au, qemu-devel@nongnu.org, clg@kaod.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 12/3/19 5:14 AM, Andrew Jeffery wrote: > Hello, > > This is a v2 of the belated follow-up from a few of my earlier attempts to fix > up the ARM generic timer for correct behaviour on the ASPEED AST2600 SoC. The > AST2600 clocks the generic timer at the rate of HPLL, which is configured to > 1125MHz. This is significantly quicker than the currently hard-coded generic > timer rate of 62.5MHz and so we see "sticky" behaviour in the guest. Glad you fixed this! I hit the same problem with the Raspi4.