From nobody Sat Feb 7 06:14:05 2026 Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 281F431D753; Fri, 19 Sep 2025 15:36:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.38.16 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758296177; cv=none; b=qJPNj6jCszpnQu5BBIv+WygLn2M+IuqP16a9nC04/hiwbOoFh9FeQ2j2JHADXMtncWXuLLwZLwSyXe/nFAR6pYDYkO9xGIXWqQ8j7vDp69fEVh2ic8eHelceb3/Roc+86CcFidUEPUq5Lu6YV/GZ1hiu6EbUrd1GMPDE0AkEiaQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758296177; c=relaxed/simple; bh=uXhIw5zxMb39SCOcYyn2/s8W7NvYLQ4cNhq6hCD5gAc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pZqwD2T+OZXcbdFqQ10qLhAPeqariBmsIKCnvjRSkGWOUuFGRzlsRz3bY1spwrrusI9Zgt5JxSaUGbvYJsUXhrsMv+Fz6/bksnZoAFP32D8COfS2+qXGJNkXcZeXt12g3y3GP2+gaqCbhyzsTTcOGfgj69q9gNJh4AZNSQiCHE0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net; spf=pass smtp.mailfrom=sipsolutions.net; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b=papsG43X; arc=none smtp.client-ip=168.119.38.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="papsG43X" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Content-Type:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=xO+mVCdWx08eTZ/4OCDNFnsQTwYMKX45MEVddt3khI4=; t=1758296176; x=1759505776; b=papsG43XvMRSg+BRjdqjPlwpTANAiJy/UZS8+DyLzRMK44I r9PUAneVF7eFNYdWaOa2O/8ZPUbrBeLsAusZCFiCXXSUMmxWRuwTBOSAdq4f4xb38sbPwNHwmpGLn zRzwhvUkyKO2biFM/gH3mkUuq+XaehHLjMrvAP5u32i/ML55xV9t3XQ0hyNhi1VJZM0nMdyP06ioi LONmjghvX4ZxO/veYD/uENkWgdLIrzeYhEvmfatG8AHPqx54U5V2W34AnTS/uK3OJJ41tks2+K/uL siJBDBeMka3WTnh03phCpMkrJYFRt2p+MywloQ5F0RKsWWs8A6NNNAtH2c06xqRA==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.98.2) (envelope-from ) id 1uzd9f-0000000G6O6-44uB; Fri, 19 Sep 2025 17:36:12 +0200 From: Benjamin Berg To: linux-um@lists.infradead.org, Willy Tarreau , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , linux-kselftest@vger.kernel.org, Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, Benjamin Berg Subject: [PATCH v2 11/11] um: switch ptrace FP register access to nolibc Date: Fri, 19 Sep 2025 17:34:20 +0200 Message-ID: <20250919153420.727385-12-benjamin@sipsolutions.net> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250919153420.727385-1-benjamin@sipsolutions.net> References: <20250919153420.727385-1-benjamin@sipsolutions.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Benjamin Berg The registers.c file only contains the routines for floating point register access in ptrace mode and initial size detection. After the addition of sys/uio.h and sys/ptrace.h to nolibc it can be moved to use it by using the sys_ptrace() wrapper. Signed-off-by: Benjamin Berg --- v2: - Use new sys_ptrace from nolibc --- arch/x86/um/os-Linux/Makefile | 5 ++++- arch/x86/um/os-Linux/registers.c | 16 ++++------------ 2 files changed, 8 insertions(+), 13 deletions(-) diff --git a/arch/x86/um/os-Linux/Makefile b/arch/x86/um/os-Linux/Makefile index 77a308aaa5ec..d37320430822 100644 --- a/arch/x86/um/os-Linux/Makefile +++ b/arch/x86/um/os-Linux/Makefile @@ -3,10 +3,13 @@ # Licensed under the GPL # =20 -obj-y =3D registers.o mcontext.o +obj-y =3D mcontext.o =20 obj-$(CONFIG_X86_32) +=3D tls.o =20 USER_OBJS :=3D $(obj-y) =20 +obj-y +=3D registers.o +NOLIBC_OBJS :=3D registers.o + include $(srctree)/arch/um/scripts/Makefile.rules diff --git a/arch/x86/um/os-Linux/registers.c b/arch/x86/um/os-Linux/regist= ers.c index eb1cdadc8a61..e570e29c3d73 100644 --- a/arch/x86/um/os-Linux/registers.c +++ b/arch/x86/um/os-Linux/registers.c @@ -28,9 +28,7 @@ int get_fp_registers(int pid, unsigned long *regs) .iov_len =3D host_fp_size, }; =20 - if (ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov) < 0) - return -errno; - return 0; + return sys_ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov); } =20 int put_fp_registers(int pid, unsigned long *regs) @@ -40,9 +38,7 @@ int put_fp_registers(int pid, unsigned long *regs) .iov_len =3D host_fp_size, }; =20 - if (ptrace(PTRACE_SETREGSET, pid, ptrace_regset, &iov) < 0) - return -errno; - return 0; + return sys_ptrace(PTRACE_SETREGSET, pid, ptrace_regset, &iov); } =20 int arch_init_registers(int pid) @@ -60,9 +56,7 @@ int arch_init_registers(int pid) =20 /* GDB has x86_xsave_length, which uses x86_cpuid_count */ ptrace_regset =3D NT_X86_XSTATE; - ret =3D ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov); - if (ret) - ret =3D -errno; + ret =3D sys_ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov); =20 if (ret =3D=3D -ENODEV) { #ifdef CONFIG_X86_32 @@ -71,9 +65,7 @@ int arch_init_registers(int pid) ptrace_regset =3D NT_PRFPREG; #endif iov.iov_len =3D 2 * 1024 * 1024; - ret =3D ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov); - if (ret) - ret =3D -errno; + ret =3D sys_ptrace(PTRACE_GETREGSET, pid, ptrace_regset, &iov); } =20 munmap(iov.iov_base, 2 * 1024 * 1024); --=20 2.51.0