From: Dave Martin <Dave.Martin@arm.com>
To: linux-kernel@vger.kernel.org
Cc: "Andrew Jones" <drjones@redhat.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Florian Weimer" <fweimer@redhat.com>,
"H.J. Lu" <hjl.tools@gmail.com>, "Jann Horn" <jannh@google.com>,
"Kees Cook" <keescook@chromium.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Mark Brown" <broonie@kernel.org>,
"Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Sudakshina Das" <sudi.das@arm.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Will Deacon" <will.deacon@arm.com>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 03/12] mm: Reserve asm-generic prot flag 0x10 for arch use
Date: Thu, 10 Oct 2019 19:44:31 +0100 [thread overview]
Message-ID: <1570733080-21015-4-git-send-email-Dave.Martin@arm.com> (raw)
In-Reply-To: <1570733080-21015-1-git-send-email-Dave.Martin@arm.com>
The asm-generic mman definitions are used by a few architectures
that also define an arch-specific PROT flag with value 0x10. This
currently applies to sparc and powerpc, and arm64 will soon join
in.
To help future maintainers, document the use of this flag in the
asm-generic header too.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
---
include/uapi/asm-generic/mman-common.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
index c160a53..81442d2 100644
--- a/include/uapi/asm-generic/mman-common.h
+++ b/include/uapi/asm-generic/mman-common.h
@@ -11,6 +11,7 @@
#define PROT_WRITE 0x2 /* page can be written */
#define PROT_EXEC 0x4 /* page can be executed */
#define PROT_SEM 0x8 /* page may be used for atomic ops */
+ /* 0x10 reserved for arch-specific use */
#define PROT_NONE 0x0 /* page can not be accessed */
#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
--
2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Dave Martin <Dave.Martin@arm.com>
To: linux-kernel@vger.kernel.org
Cc: "Andrew Jones" <drjones@redhat.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Florian Weimer" <fweimer@redhat.com>,
"H.J. Lu" <hjl.tools@gmail.com>, "Jann Horn" <jannh@google.com>,
"Kees Cook" <keescook@chromium.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Mark Brown" <broonie@kernel.org>,
"Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Sudakshina Das" <sudi.das@arm.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Will Deacon" <will.deacon@arm.com>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>
Subject: [PATCH v2 03/12] mm: Reserve asm-generic prot flag 0x10 for arch use
Date: Thu, 10 Oct 2019 19:44:31 +0100 [thread overview]
Message-ID: <1570733080-21015-4-git-send-email-Dave.Martin@arm.com> (raw)
In-Reply-To: <1570733080-21015-1-git-send-email-Dave.Martin@arm.com>
The asm-generic mman definitions are used by a few architectures
that also define an arch-specific PROT flag with value 0x10. This
currently applies to sparc and powerpc, and arm64 will soon join
in.
To help future maintainers, document the use of this flag in the
asm-generic header too.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
---
include/uapi/asm-generic/mman-common.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
index c160a53..81442d2 100644
--- a/include/uapi/asm-generic/mman-common.h
+++ b/include/uapi/asm-generic/mman-common.h
@@ -11,6 +11,7 @@
#define PROT_WRITE 0x2 /* page can be written */
#define PROT_EXEC 0x4 /* page can be executed */
#define PROT_SEM 0x8 /* page may be used for atomic ops */
+ /* 0x10 reserved for arch-specific use */
#define PROT_NONE 0x0 /* page can not be accessed */
#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
--
2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Dave Martin <Dave.Martin@arm.com>
To: linux-kernel@vger.kernel.org
Cc: "Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will.deacon@arm.com>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
linux-arch@vger.kernel.org,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"H.J. Lu" <hjl.tools@gmail.com>,
"Andrew Jones" <drjones@redhat.com>,
"Kees Cook" <keescook@chromium.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Jann Horn" <jannh@google.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Mark Brown" <broonie@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
"Florian Weimer" <fweimer@redhat.com>,
"Sudakshina Das" <sudi.das@arm.com>
Subject: [PATCH v2 03/12] mm: Reserve asm-generic prot flag 0x10 for arch use
Date: Thu, 10 Oct 2019 19:44:31 +0100 [thread overview]
Message-ID: <1570733080-21015-4-git-send-email-Dave.Martin@arm.com> (raw)
In-Reply-To: <1570733080-21015-1-git-send-email-Dave.Martin@arm.com>
The asm-generic mman definitions are used by a few architectures
that also define an arch-specific PROT flag with value 0x10. This
currently applies to sparc and powerpc, and arm64 will soon join
in.
To help future maintainers, document the use of this flag in the
asm-generic header too.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
---
include/uapi/asm-generic/mman-common.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
index c160a53..81442d2 100644
--- a/include/uapi/asm-generic/mman-common.h
+++ b/include/uapi/asm-generic/mman-common.h
@@ -11,6 +11,7 @@
#define PROT_WRITE 0x2 /* page can be written */
#define PROT_EXEC 0x4 /* page can be executed */
#define PROT_SEM 0x8 /* page may be used for atomic ops */
+ /* 0x10 reserved for arch-specific use */
#define PROT_NONE 0x0 /* page can not be accessed */
#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
--
2.1.4
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-10-10 18:45 UTC|newest]
Thread overview: 145+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-10 18:44 [PATCH v2 00/12] arm64: ARMv8.5-A: Branch Target Identification support Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 01/12] ELF: UAPI and Kconfig additions for ELF program properties Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 02/12] ELF: Add ELF program property parsing support Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin [this message]
2019-10-10 18:44 ` [PATCH v2 03/12] mm: Reserve asm-generic prot flag 0x10 for arch use Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 04/12] arm64: docs: cpu-feature-registers: Document ID_AA64PFR1_EL1 Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 13:19 ` Alex Bennée
2019-10-11 13:19 ` Alex Bennée
2019-10-11 13:19 ` Alex Bennée
2019-10-11 14:51 ` Dave Martin
2019-10-11 14:51 ` Dave Martin
2019-10-11 14:51 ` Dave Martin
2019-10-21 19:18 ` Mark Brown
2019-10-21 19:18 ` Mark Brown
2019-10-21 19:18 ` Mark Brown
2019-10-22 10:32 ` Will Deacon
2019-10-22 10:32 ` Will Deacon
2019-10-22 10:32 ` Will Deacon
2019-10-10 18:44 ` [PATCH v2 05/12] arm64: Basic Branch Target Identification support Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 15:06 ` [FIXUP 0/2] Fixups to patch 5 Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:06 ` [FIXUP 1/2] squash! arm64: Basic Branch Target Identification support Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:06 ` [FIXUP 2/2] " Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:06 ` Dave Martin
2019-10-11 15:10 ` [PATCH v2 05/12] " Mark Rutland
2019-10-11 15:10 ` Mark Rutland
2019-10-11 15:10 ` Mark Rutland
2019-10-11 15:25 ` Richard Henderson
2019-10-11 15:25 ` Richard Henderson
2019-10-11 15:25 ` Richard Henderson
2019-10-11 15:32 ` Dave Martin
2019-10-11 15:32 ` Dave Martin
2019-10-11 15:32 ` Dave Martin
2019-10-11 15:40 ` Mark Rutland
2019-10-11 15:40 ` Mark Rutland
2019-10-11 15:40 ` Mark Rutland
2019-10-11 15:44 ` Dave Martin
2019-10-11 15:44 ` Dave Martin
2019-10-11 15:44 ` Dave Martin
2019-10-11 16:01 ` Dave Martin
2019-10-11 16:01 ` Dave Martin
2019-10-11 16:01 ` Dave Martin
2019-10-11 16:42 ` Dave Martin
2019-10-11 16:42 ` Dave Martin
2019-10-11 16:42 ` Dave Martin
2019-10-18 11:05 ` Mark Rutland
2019-10-18 11:05 ` Mark Rutland
2019-10-18 11:05 ` Mark Rutland
2019-10-18 13:36 ` Dave Martin
2019-10-18 13:36 ` Dave Martin
2019-10-18 13:36 ` Dave Martin
2019-10-11 17:20 ` Dave Martin
2019-10-11 17:20 ` Dave Martin
2019-10-11 17:20 ` Dave Martin
2019-10-18 11:10 ` Mark Rutland
2019-10-18 11:10 ` Mark Rutland
2019-10-18 11:10 ` Mark Rutland
2019-10-18 13:37 ` Dave Martin
2019-10-18 13:37 ` Dave Martin
2019-10-18 13:37 ` Dave Martin
2019-10-18 11:16 ` Mark Rutland
2019-10-18 11:16 ` Mark Rutland
2019-10-18 11:16 ` Mark Rutland
2019-10-18 11:16 ` Mark Rutland
2019-10-18 13:40 ` Dave Martin
2019-10-18 13:40 ` Dave Martin
2019-10-18 13:40 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 06/12] elf: Allow arch to tweak initial mmap prot flags Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 07/12] arm64: elf: Enable BTI at exec based on ELF program properties Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 08/12] arm64: BTI: Decode BYTPE bits when printing PSTATE Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 15:31 ` Richard Henderson
2019-10-11 15:31 ` Richard Henderson
2019-10-11 15:31 ` Richard Henderson
2019-10-11 15:33 ` Dave Martin
2019-10-11 15:33 ` Dave Martin
2019-10-11 15:33 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 09/12] arm64: traps: Fix inconsistent faulting instruction skipping Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 15:24 ` Mark Rutland
2019-10-11 15:24 ` Mark Rutland
2019-10-11 15:24 ` Mark Rutland
2019-10-15 15:21 ` Dave Martin
2019-10-15 15:21 ` Dave Martin
2019-10-15 15:21 ` Dave Martin
2019-10-15 16:42 ` Mark Rutland
2019-10-15 16:42 ` Mark Rutland
2019-10-15 16:42 ` Mark Rutland
2019-10-15 16:49 ` Dave Martin
2019-10-15 16:49 ` Dave Martin
2019-10-15 16:49 ` Dave Martin
2019-10-18 16:40 ` Dave Martin
2019-10-18 16:40 ` Dave Martin
2019-10-18 16:40 ` Dave Martin
2019-10-22 11:09 ` Robin Murphy
2019-10-22 11:09 ` Robin Murphy
2019-10-22 11:09 ` Robin Murphy
2019-10-10 18:44 ` [PATCH v2 10/12] arm64: traps: Shuffle code to eliminate forward declarations Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 11/12] arm64: BTI: Reset BTYPE when skipping emulated instructions Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 14:21 ` Mark Rutland
2019-10-11 14:21 ` Mark Rutland
2019-10-11 14:21 ` Mark Rutland
2019-10-11 14:47 ` Dave Martin
2019-10-11 14:47 ` Dave Martin
2019-10-11 14:47 ` Dave Martin
2019-10-18 11:04 ` Mark Rutland
2019-10-18 11:04 ` Mark Rutland
2019-10-18 11:04 ` Mark Rutland
2019-10-18 14:49 ` Dave Martin
2019-10-18 14:49 ` Dave Martin
2019-10-18 14:49 ` Dave Martin
2019-10-10 18:44 ` [PATCH v2 12/12] KVM: " Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-10 18:44 ` Dave Martin
2019-10-11 14:24 ` Mark Rutland
2019-10-11 14:24 ` Mark Rutland
2019-10-11 14:24 ` Mark Rutland
2019-10-11 14:44 ` Dave Martin
2019-10-11 14:44 ` Dave Martin
2019-10-11 14:44 ` Dave Martin
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