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authorAnisse Astier <aastier@freebox.fr>2019-06-17 15:22:22 +0200
committerWill Deacon <will.deacon@arm.com>2019-06-18 14:36:26 +0100
commit35341ca0614ab13e1ef34ad4f29a39e15ef31fa8 (patch)
tree4ec4860f035c8eabe0f1ceaea7c2e95da838d9ac /arch/arm64
parentadeaa21a4b6954e878f3f7d1c5659ed9c1fe567a (diff)
arm64/sve: <uapi/asm/ptrace.h> should not depend on <uapi/linux/prctl.h>
Pulling linux/prctl.h into asm/ptrace.h in the arm64 UAPI headers causes userspace build issues for any program (e.g. strace and qemu) that includes both <sys/prctl.h> and <linux/ptrace.h> when using musl libc: | error: redefinition of 'struct prctl_mm_map' | struct prctl_mm_map { See https://github.com/foundriesio/meta-lmp/commit/6d4a106e191b5d79c41b9ac78fd321316d3013c0 for a public example of people working around this issue. Although it's a bit grotty, fix this breakage by duplicating the prctl constant definitions. Since these are part of the kernel ABI, they cannot be changed in future and so it's not the end of the world to have them open-coded. Fixes: 43d4da2c45b2 ("arm64/sve: ptrace and ELF coredump support") Cc: stable@vger.kernel.org Acked-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Anisse Astier <aastier@freebox.fr> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/uapi/asm/ptrace.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
index 97c53203150b..e932284993d4 100644
--- a/arch/arm64/include/uapi/asm/ptrace.h
+++ b/arch/arm64/include/uapi/asm/ptrace.h
@@ -65,8 +65,6 @@
#ifndef __ASSEMBLY__
-#include <linux/prctl.h>
-
/*
* User structures for general purpose, floating point and debug registers.
*/
@@ -113,10 +111,10 @@ struct user_sve_header {
/*
* Common SVE_PT_* flags:
- * These must be kept in sync with prctl interface in <linux/ptrace.h>
+ * These must be kept in sync with prctl interface in <linux/prctl.h>
*/
-#define SVE_PT_VL_INHERIT (PR_SVE_VL_INHERIT >> 16)
-#define SVE_PT_VL_ONEXEC (PR_SVE_SET_VL_ONEXEC >> 16)
+#define SVE_PT_VL_INHERIT ((1 << 17) /* PR_SVE_VL_INHERIT */ >> 16)
+#define SVE_PT_VL_ONEXEC ((1 << 18) /* PR_SVE_SET_VL_ONEXEC */ >> 16)
/*