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Thu, 13 Mar 2025 00:16:22 -0700 (PDT) Received: from localhost ([157.82.205.237]) by smtp.gmail.com with UTF8SMTPSA id d9443c01a7336-225c6bd53aasm6743985ad.247.2025.03.13.00.16.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Mar 2025 00:16:21 -0700 (PDT) From: Akihiko Odaki Date: Thu, 13 Mar 2025 16:16:17 +0900 Subject: [PATCH] target/arm: Define raw write for PMU CLR registers MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250313-clr-v1-1-2cc49df40fe9@daynix.com> X-B4-Tracking: v=1; b=H4sIAECG0mcC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDI1MDY0Nj3eScIl2zRGMTC2NDMyOLJHMloMqCotS0zAqwKdGxtbUAsDkDX1U AAAA= X-Change-ID: 20250313-clr-6a34831628b7 To: qemu-devel@nongnu.org Cc: Peter Maydell , qemu-arm@nongnu.org, devel@daynix.com, Akihiko Odaki X-Mailer: b4 0.15-dev-edae6 Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x630.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-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 PMCNTENCLR_EL0 and PMINTENCLR_EL1 clears written bits so we need an alternative raw write functions, which will be used to copy KVM kernel coprocessor state into userspace. Signed-off-by: Akihiko Odaki --- target/arm/helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index f0ead22937bf..30883cd3a989 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -1907,7 +1907,8 @@ static const ARMCPRegInfo v7_cp_reginfo[] = { .fgt = FGT_PMCNTEN, .type = ARM_CP_ALIAS | ARM_CP_IO, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), - .writefn = pmcntenclr_write }, + .writefn = pmcntenclr_write, + .raw_writefn = raw_write }, { .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3, .access = PL0_RW, .type = ARM_CP_IO, .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmovsr), @@ -2033,7 +2034,8 @@ static const ARMCPRegInfo v7_cp_reginfo[] = { .fgt = FGT_PMINTEN, .type = ARM_CP_ALIAS | ARM_CP_IO | ARM_CP_NO_RAW, .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), - .writefn = pmintenclr_write }, + .writefn = pmintenclr_write, + .raw_writefn = raw_write }, { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH, .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0, .access = PL1_R, --- base-commit: 825b96dbcee23d134b691fc75618b59c5f53da32 change-id: 20250313-clr-6a34831628b7 Best regards, -- Akihiko Odaki