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Mon, 25 Mar 2024 07:27:02 +0100 From: Sven Schnelle To: Richard Henderson Cc: qemu-devel@nongnu.org, Helge Deller Subject: Re: [PATCH 2/3] target/hppa: mask offset bits in gva In-Reply-To: <7785c89b-95eb-4b56-8fbd-5f14fba7de08@linaro.org> (Richard Henderson's message of "Sun, 24 Mar 2024 13:14:34 -1000") References: <20240324080945.991100-1-svens@stackframe.org> <20240324080945.991100-3-svens@stackframe.org> <87o7b31nhj.fsf@t14.stackframe.org> <7785c89b-95eb-4b56-8fbd-5f14fba7de08@linaro.org> Date: Mon, 25 Mar 2024 07:27:00 +0100 Message-ID: <87h6gu25e3.fsf@t14.stackframe.org> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=23.83.215.31; envelope-from=svens@stackframe.org; helo=cat.oak.relay.mailchannels.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Richard Henderson writes: > On 3/24/24 08:41, Sven Schnelle wrote: >> 7f09e0: val=000fffb0301fffff r2=110e0f0000000001 r1=01fffffffffff600 phys=fffffffffffb0000 4K aid=1 pl1=0, pl2=0 type=1 (DATA RW) >> 'val' is the value constructed from IOR/ISR, > > Is this byte swapped in some weird way? I do not see how 'val' > corresponds to any of the addresses we're talking about. From here, > the string "301fffff" appears to an out-of-context grep hit. It's just both values combined together, where the 301fffff is basically the ISR content. It's not a out of context grep - the real machines i have are constructing the same value, and the same offset into the pagetable. I verified that by patching the DTLB miss handler in HPUX to write the ISR/IOR and calulated pagetable offset/value to PAGE0 and looked with the kernel debugger at the values.