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Diffstat (limited to 'meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch')
-rw-r--r--meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch289
1 files changed, 0 insertions, 289 deletions
diff --git a/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch
deleted file mode 100644
index 0423f0f2cc..0000000000
--- a/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch
+++ /dev/null
@@ -1,289 +0,0 @@
-From 1114697c04b9699112e78dd8fc6ec849609ca1cb Mon Sep 17 00:00:00 2001
-From: Dave Martin <Dave.Martin@arm.com>
-Date: Tue, 11 Dec 2018 19:26:47 +0000
-Subject: [PATCH 3/3] 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: Bruce Ashfield <bruce.ashfield@windriver.com>
-
-Upstream-Status: Submitted [https://www.spinics.net/lists/arm-kernel/msg694800.html]
----
- arch/arm64/include/uapi/asm/ptrace.h | 39 ++++++++++-----------
- arch/arm64/include/uapi/asm/sigcontext.h | 56 +++++++++++++++----------------
- arch/arm64/include/uapi/asm/sve_context.h | 50 +++++++++++++++++++++++++++
- 3 files changed, 96 insertions(+), 49 deletions(-)
- create mode 100644 arch/arm64/include/uapi/asm/sve_context.h
-
-diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
-index ad64d2c92ef5..81547c3a95a3 100644
---- 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 ? \
-diff --git a/arch/arm64/include/uapi/asm/sigcontext.h b/arch/arm64/include/uapi/asm/sigcontext.h
-index dca8f8b5168b..5f3c0cec5af9 100644
---- 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 */
-diff --git a/arch/arm64/include/uapi/asm/sve_context.h b/arch/arm64/include/uapi/asm/sve_context.h
-new file mode 100644
-index 000000000000..140f14c318a5
---- /dev/null
-+++ b/arch/arm64/include/uapi/asm/sve_context.h
-@@ -0,0 +1,50 @@
-+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-+/* Copyright (C) 2017-2018 ARM Limited */
-+
-+#if !defined(_UAPI__ASM_PTRACE_H) && !defined(_UAPI__ASM_SIGCONTEXT_H)
-+#error "Do not include this header or use its definitions directly."
-+#endif
-+
-+#ifndef _UAPI__ASM_SVE_CONTEXT_H
-+#define _UAPI__ASM_SVE_CONTEXT_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 */
---
-2.5.0
-
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