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Thu, 30 Jan 2025 15:00:44 -0800 (PST) Received: from ghost ([2001:428:6405:1e0:cd5c:b7b4:1f3d:62bb]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72fe631bf9asm1999761b3a.27.2025.01.30.15.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jan 2025 15:00:43 -0800 (PST) Date: Thu, 30 Jan 2025 15:00:41 -0800 From: Charlie Jenkins To: Aleksandar Rikalo Cc: linux-riscv@lists.infradead.org, Paul Walmsley , Palmer Dabbelt , Albert Ou , Andrew Jones , Christoph =?iso-8859-1?Q?M=FCllner?= , linux-kernel@vger.kernel.org, Djordje Todorovic Subject: Re: [PATCH v3] riscv: Fix the PAUSE Opcode for MIPS P8700. Message-ID: References: <20250129131703.733098-1-arikalo@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250129131703.733098-1-arikalo@gmail.com> On Wed, Jan 29, 2025 at 02:17:03PM +0100, Aleksandar Rikalo wrote: > From: Djordje Todorovic > > The riscv MIPS P8700 uses a different opcode for PAUSE. > It is a ‘hint’ encoding of the SLLI instruction, with rd=0, rs1=0 and > imm=5. It will behave as a NOP instruction if no additional behavior > beyond that of SLLI is implemented. > > Add ERRATA_MIPS and ERRATA_MIPS_P8700_PAUSE_OPCODE configs. > Handle errata for MIPS CPUs. > > Signed-off-by: Djordje Todorovic > Signed-off-by: Aleksandar Rikalo > Signed-off-by: Raj Vishwanathan4 Please copy people who commented on previous versions of patches in the new versions! - Charlie