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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id d2sm4336919pgp.56.2020.06.12.00.10.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Jun 2020 00:10:12 -0700 (PDT) From: Greentime Hu To: greentime.hu@sifive.com, oleg@redhat.com, guoren@linux.alibaba.com, vincent.chen@sifive.com, paul.walmsley@sifive.com, palmerdabbelt@google.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/13] ptrace: Use regset_size() for dynamic regset Date: Fri, 12 Jun 2020 15:09:50 +0800 Message-Id: <8dbfdc77d4fac81a113ae2572ff9d01d9f155bfb.1591344965.git.greentime.hu@sifive.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch uses regset_size() instead of using regset->n and regset->size directly. In this case, it will call the get_size() ported by arch dynamically to support dynamic regset size case. Signed-off-by: Greentime Hu Acked-by: Oleg Nesterov --- kernel/ptrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 43d6179508d6..946b2c4ec4fa 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -888,7 +888,7 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type, regset_no = regset - view->regsets; kiov->iov_len = min(kiov->iov_len, - (__kernel_size_t) (regset->n * regset->size)); + (__kernel_size_t) regset_size(task, regset)); if (req == PTRACE_GETREGSET) return copy_regset_to_user(task, view, regset_no, 0, -- 2.27.0