[01/13] ptrace: Use regset_size() for dynamic regset

Message ID	8dbfdc77d4fac81a113ae2572ff9d01d9f155bfb.1591344965.git.greentime.hu@sifive.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=MrGX=7Z=lists.infradead.org=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4460920838 From: Greentime Hu <greentime.hu@sifive.com> 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> In-Reply-To: <cover.1591344965.git.greentime.hu@sifive.com> References: <cover.1591344965.git.greentime.hu@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:541 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Precedence: list Sender: "linux-riscv" <linux-riscv-bounces@lists.infradead.org> Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org
Series	riscv: Add vector ISA support \| expand [v6,00/13] riscv: Add vector ISA support [01/13] ptrace: Use regset_size() for dynamic regset [02/13] riscv: Separate patch for cflags and aflags [03/13] riscv: Rename __switch_to_aux -> fpu [04/13] riscv: Extending cpufeature.c to detect V-extension [05/13] riscv: Add new csr defines related to vector extension [06/13] riscv: Add vector feature to compile [07/13] riscv: Add has_vector/riscv_vsize to save vector features. [08/13] riscv: Reset vector register [09/13] riscv: Add vector struct and assembler definitions [10/13] riscv: Add task switch support for vector [11/13] riscv: Add ptrace vector support [12/13] riscv: Add sigcontext save/restore for vector [13/13] riscv: signal: Report signal frame size to userspace via auxv

Message ID

8dbfdc77d4fac81a113ae2572ff9d01d9f155bfb.1591344965.git.greentime.hu@sifive.com (mailing list archive)

State

New, archived

Headers

DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4460920838
From: Greentime Hu <greentime.hu@sifive.com>
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>
In-Reply-To: <cover.1591344965.git.greentime.hu@sifive.com>
References: <cover.1591344965.git.greentime.hu@sifive.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: list
Sender: "linux-riscv" <linux-riscv-bounces@lists.infradead.org>
Errors-To: 
 linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org

Series

riscv: Add vector ISA support | expand

Commit Message

Greentime Hu June 12, 2020, 7:09 a.m. UTC

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 <greentime.hu@sifive.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
---
 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,

[01/13] ptrace: Use regset_size() for dynamic regset

Commit Message

Patch