diff options
Diffstat (limited to 'target/linux/generic/backport-4.19/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch')
| -rw-r--r-- | target/linux/generic/backport-4.19/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/target/linux/generic/backport-4.19/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch b/target/linux/generic/backport-4.19/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch deleted file mode 100644 index 7c574fd343..0000000000 --- a/target/linux/generic/backport-4.19/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch +++ /dev/null @@ -1,280 +0,0 @@ -From 9966a05c7b80f075f2bc7e48dbb108d3f2927234 Mon Sep 17 00:00:00 2001 -From: Dave Martin <Dave.Martin@arm.com> -Date: Fri, 4 Jan 2019 13:09:51 +0000 -Subject: [PATCH] arm64/sve: Disentangle <uapi/asm/ptrace.h> from - <uapi/asm/sigcontext.h> - -Currently, <uapi/asm/sigcontext.h> provides common definitions for -describing SVE context structures that are also used by the ptrace -definitions in <uapi/asm/ptrace.h>. - -For this reason, a #include of <asm/sigcontext.h> was added in -ptrace.h, but it this turns out that this can interact badly with -userspace code that tries to include ptrace.h on top of the libc -headers (which may provide their own shadow definitions for -sigcontext.h). - -To make the headers easier for userspace to consume, this patch -bounces the common definitions into an __SVE_* namespace and moves -them to a backend header <uapi/asm/sve_context.h> that can be -included by the other headers as appropriate. This should allow -ptrace.h to be used alongside libc's sigcontext.h (if any) without -ill effects. - -This should make the situation unambiguous: <asm/sigcontext.h> is -the header to include for the sigframe-specific definitions, while -<asm/ptrace.h> is the header to include for ptrace-specific -definitions. - -To avoid conflicting with existing usage, <asm/sigcontext.h> -remains the canonical way to get the common definitions for -SVE_VQ_MIN, sve_vq_from_vl() etc., both in userspace and in the -kernel: relying on these being defined as a side effect of -including just <asm/ptrace.h> was never intended to be safe. - -Signed-off-by: Dave Martin <Dave.Martin@arm.com> -Signed-off-by: Will Deacon <will.deacon@arm.com> ---- - arch/arm64/include/uapi/asm/ptrace.h | 39 ++++++++-------- - arch/arm64/include/uapi/asm/sigcontext.h | 56 +++++++++++------------ - arch/arm64/include/uapi/asm/sve_context.h | 53 +++++++++++++++++++++ - 3 files changed, 99 insertions(+), 49 deletions(-) - create mode 100644 arch/arm64/include/uapi/asm/sve_context.h - ---- a/arch/arm64/include/uapi/asm/ptrace.h -+++ b/arch/arm64/include/uapi/asm/ptrace.h -@@ -23,7 +23,7 @@ - #include <linux/types.h> - - #include <asm/hwcap.h> --#include <asm/sigcontext.h> -+#include <asm/sve_context.h> - - - /* -@@ -129,9 +129,9 @@ struct user_sve_header { - */ - - /* Offset from the start of struct user_sve_header to the register data */ --#define SVE_PT_REGS_OFFSET \ -- ((sizeof(struct user_sve_header) + (SVE_VQ_BYTES - 1)) \ -- / SVE_VQ_BYTES * SVE_VQ_BYTES) -+#define SVE_PT_REGS_OFFSET \ -+ ((sizeof(struct user_sve_header) + (__SVE_VQ_BYTES - 1)) \ -+ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) - - /* - * The register data content and layout depends on the value of the -@@ -177,39 +177,36 @@ struct user_sve_header { - * Additional data might be appended in the future. - */ - --#define SVE_PT_SVE_ZREG_SIZE(vq) SVE_SIG_ZREG_SIZE(vq) --#define SVE_PT_SVE_PREG_SIZE(vq) SVE_SIG_PREG_SIZE(vq) --#define SVE_PT_SVE_FFR_SIZE(vq) SVE_SIG_FFR_SIZE(vq) -+#define SVE_PT_SVE_ZREG_SIZE(vq) __SVE_ZREG_SIZE(vq) -+#define SVE_PT_SVE_PREG_SIZE(vq) __SVE_PREG_SIZE(vq) -+#define SVE_PT_SVE_FFR_SIZE(vq) __SVE_FFR_SIZE(vq) - #define SVE_PT_SVE_FPSR_SIZE sizeof(__u32) - #define SVE_PT_SVE_FPCR_SIZE sizeof(__u32) - --#define __SVE_SIG_TO_PT(offset) \ -- ((offset) - SVE_SIG_REGS_OFFSET + SVE_PT_REGS_OFFSET) -- - #define SVE_PT_SVE_OFFSET SVE_PT_REGS_OFFSET - - #define SVE_PT_SVE_ZREGS_OFFSET \ -- __SVE_SIG_TO_PT(SVE_SIG_ZREGS_OFFSET) -+ (SVE_PT_REGS_OFFSET + __SVE_ZREGS_OFFSET) - #define SVE_PT_SVE_ZREG_OFFSET(vq, n) \ -- __SVE_SIG_TO_PT(SVE_SIG_ZREG_OFFSET(vq, n)) -+ (SVE_PT_REGS_OFFSET + __SVE_ZREG_OFFSET(vq, n)) - #define SVE_PT_SVE_ZREGS_SIZE(vq) \ -- (SVE_PT_SVE_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET) -+ (SVE_PT_SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET) - - #define SVE_PT_SVE_PREGS_OFFSET(vq) \ -- __SVE_SIG_TO_PT(SVE_SIG_PREGS_OFFSET(vq)) -+ (SVE_PT_REGS_OFFSET + __SVE_PREGS_OFFSET(vq)) - #define SVE_PT_SVE_PREG_OFFSET(vq, n) \ -- __SVE_SIG_TO_PT(SVE_SIG_PREG_OFFSET(vq, n)) -+ (SVE_PT_REGS_OFFSET + __SVE_PREG_OFFSET(vq, n)) - #define SVE_PT_SVE_PREGS_SIZE(vq) \ -- (SVE_PT_SVE_PREG_OFFSET(vq, SVE_NUM_PREGS) - \ -+ (SVE_PT_SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - \ - SVE_PT_SVE_PREGS_OFFSET(vq)) - - #define SVE_PT_SVE_FFR_OFFSET(vq) \ -- __SVE_SIG_TO_PT(SVE_SIG_FFR_OFFSET(vq)) -+ (SVE_PT_REGS_OFFSET + __SVE_FFR_OFFSET(vq)) - - #define SVE_PT_SVE_FPSR_OFFSET(vq) \ - ((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + \ -- (SVE_VQ_BYTES - 1)) \ -- / SVE_VQ_BYTES * SVE_VQ_BYTES) -+ (__SVE_VQ_BYTES - 1)) \ -+ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) - #define SVE_PT_SVE_FPCR_OFFSET(vq) \ - (SVE_PT_SVE_FPSR_OFFSET(vq) + SVE_PT_SVE_FPSR_SIZE) - -@@ -220,8 +217,8 @@ struct user_sve_header { - - #define SVE_PT_SVE_SIZE(vq, flags) \ - ((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE \ -- - SVE_PT_SVE_OFFSET + (SVE_VQ_BYTES - 1)) \ -- / SVE_VQ_BYTES * SVE_VQ_BYTES) -+ - SVE_PT_SVE_OFFSET + (__SVE_VQ_BYTES - 1)) \ -+ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) - - #define SVE_PT_SIZE(vq, flags) \ - (((flags) & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE ? \ ---- a/arch/arm64/include/uapi/asm/sigcontext.h -+++ b/arch/arm64/include/uapi/asm/sigcontext.h -@@ -130,6 +130,8 @@ struct sve_context { - - #endif /* !__ASSEMBLY__ */ - -+#include <asm/sve_context.h> -+ - /* - * The SVE architecture leaves space for future expansion of the - * vector length beyond its initial architectural limit of 2048 bits -@@ -138,21 +140,20 @@ struct sve_context { - * See linux/Documentation/arm64/sve.txt for a description of the VL/VQ - * terminology. - */ --#define SVE_VQ_BYTES 16 /* number of bytes per quadword */ -+#define SVE_VQ_BYTES __SVE_VQ_BYTES /* bytes per quadword */ - --#define SVE_VQ_MIN 1 --#define SVE_VQ_MAX 512 -+#define SVE_VQ_MIN __SVE_VQ_MIN -+#define SVE_VQ_MAX __SVE_VQ_MAX - --#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES) --#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES) -+#define SVE_VL_MIN __SVE_VL_MIN -+#define SVE_VL_MAX __SVE_VL_MAX - --#define SVE_NUM_ZREGS 32 --#define SVE_NUM_PREGS 16 -+#define SVE_NUM_ZREGS __SVE_NUM_ZREGS -+#define SVE_NUM_PREGS __SVE_NUM_PREGS - --#define sve_vl_valid(vl) \ -- ((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX) --#define sve_vq_from_vl(vl) ((vl) / SVE_VQ_BYTES) --#define sve_vl_from_vq(vq) ((vq) * SVE_VQ_BYTES) -+#define sve_vl_valid(vl) __sve_vl_valid(vl) -+#define sve_vq_from_vl(vl) __sve_vq_from_vl(vl) -+#define sve_vl_from_vq(vq) __sve_vl_from_vq(vq) - - /* - * If the SVE registers are currently live for the thread at signal delivery, -@@ -205,34 +206,33 @@ struct sve_context { - * Additional data might be appended in the future. - */ - --#define SVE_SIG_ZREG_SIZE(vq) ((__u32)(vq) * SVE_VQ_BYTES) --#define SVE_SIG_PREG_SIZE(vq) ((__u32)(vq) * (SVE_VQ_BYTES / 8)) --#define SVE_SIG_FFR_SIZE(vq) SVE_SIG_PREG_SIZE(vq) -+#define SVE_SIG_ZREG_SIZE(vq) __SVE_ZREG_SIZE(vq) -+#define SVE_SIG_PREG_SIZE(vq) __SVE_PREG_SIZE(vq) -+#define SVE_SIG_FFR_SIZE(vq) __SVE_FFR_SIZE(vq) - - #define SVE_SIG_REGS_OFFSET \ -- ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ -- / SVE_VQ_BYTES * SVE_VQ_BYTES) -+ ((sizeof(struct sve_context) + (__SVE_VQ_BYTES - 1)) \ -+ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) - --#define SVE_SIG_ZREGS_OFFSET SVE_SIG_REGS_OFFSET -+#define SVE_SIG_ZREGS_OFFSET \ -+ (SVE_SIG_REGS_OFFSET + __SVE_ZREGS_OFFSET) - #define SVE_SIG_ZREG_OFFSET(vq, n) \ -- (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREG_SIZE(vq) * (n)) --#define SVE_SIG_ZREGS_SIZE(vq) \ -- (SVE_SIG_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_SIG_ZREGS_OFFSET) -+ (SVE_SIG_REGS_OFFSET + __SVE_ZREG_OFFSET(vq, n)) -+#define SVE_SIG_ZREGS_SIZE(vq) __SVE_ZREGS_SIZE(vq) - - #define SVE_SIG_PREGS_OFFSET(vq) \ -- (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREGS_SIZE(vq)) -+ (SVE_SIG_REGS_OFFSET + __SVE_PREGS_OFFSET(vq)) - #define SVE_SIG_PREG_OFFSET(vq, n) \ -- (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREG_SIZE(vq) * (n)) --#define SVE_SIG_PREGS_SIZE(vq) \ -- (SVE_SIG_PREG_OFFSET(vq, SVE_NUM_PREGS) - SVE_SIG_PREGS_OFFSET(vq)) -+ (SVE_SIG_REGS_OFFSET + __SVE_PREG_OFFSET(vq, n)) -+#define SVE_SIG_PREGS_SIZE(vq) __SVE_PREGS_SIZE(vq) - - #define SVE_SIG_FFR_OFFSET(vq) \ -- (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREGS_SIZE(vq)) -+ (SVE_SIG_REGS_OFFSET + __SVE_FFR_OFFSET(vq)) - - #define SVE_SIG_REGS_SIZE(vq) \ -- (SVE_SIG_FFR_OFFSET(vq) + SVE_SIG_FFR_SIZE(vq) - SVE_SIG_REGS_OFFSET) -- --#define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq)) -+ (__SVE_FFR_OFFSET(vq) + __SVE_FFR_SIZE(vq)) - -+#define SVE_SIG_CONTEXT_SIZE(vq) \ -+ (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq)) - - #endif /* _UAPI__ASM_SIGCONTEXT_H */ ---- /dev/null -+++ b/arch/arm64/include/uapi/asm/sve_context.h -@@ -0,0 +1,53 @@ -+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -+/* Copyright (C) 2017-2018 ARM Limited */ -+ -+/* -+ * For use by other UAPI headers only. -+ * Do not make direct use of header or its definitions. -+ */ -+ -+#ifndef _UAPI__ASM_SVE_CONTEXT_H -+#define _UAPI__ASM_SVE_CONTEXT_H -+ -+#include <linux/types.h> -+ -+#define __SVE_VQ_BYTES 16 /* number of bytes per quadword */ -+ -+#define __SVE_VQ_MIN 1 -+#define __SVE_VQ_MAX 512 -+ -+#define __SVE_VL_MIN (__SVE_VQ_MIN * __SVE_VQ_BYTES) -+#define __SVE_VL_MAX (__SVE_VQ_MAX * __SVE_VQ_BYTES) -+ -+#define __SVE_NUM_ZREGS 32 -+#define __SVE_NUM_PREGS 16 -+ -+#define __sve_vl_valid(vl) \ -+ ((vl) % __SVE_VQ_BYTES == 0 && \ -+ (vl) >= __SVE_VL_MIN && \ -+ (vl) <= __SVE_VL_MAX) -+ -+#define __sve_vq_from_vl(vl) ((vl) / __SVE_VQ_BYTES) -+#define __sve_vl_from_vq(vq) ((vq) * __SVE_VQ_BYTES) -+ -+#define __SVE_ZREG_SIZE(vq) ((__u32)(vq) * __SVE_VQ_BYTES) -+#define __SVE_PREG_SIZE(vq) ((__u32)(vq) * (__SVE_VQ_BYTES / 8)) -+#define __SVE_FFR_SIZE(vq) __SVE_PREG_SIZE(vq) -+ -+#define __SVE_ZREGS_OFFSET 0 -+#define __SVE_ZREG_OFFSET(vq, n) \ -+ (__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n)) -+#define __SVE_ZREGS_SIZE(vq) \ -+ (__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET) -+ -+#define __SVE_PREGS_OFFSET(vq) \ -+ (__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq)) -+#define __SVE_PREG_OFFSET(vq, n) \ -+ (__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n)) -+#define __SVE_PREGS_SIZE(vq) \ -+ (__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq)) -+ -+#define __SVE_FFR_OFFSET(vq) \ -+ (__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq)) -+ -+#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */ |