From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: mingo@redhat.com, linux-mm@kvack.org,
Jeff Dike <jdike@addtoit.com>,
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Subject: [PATCH 02/11] RFP prot support: add needed macros
Date: Sat, 31 Mar 2007 02:35:19 +0200 [thread overview]
Message-ID: <20070331003518.3415.36696.stgit@americanbeauty.home.lan> (raw)
In-Reply-To: <20070331003453.3415.70825.stgit@americanbeauty.home.lan>
Add pte_to_pgprot() and pgoff_prot_to_pte() macros, in generic versions; so we
can safely use it and keep the kernel compiling. For some architectures real
definitions of the macros are actually provided.
Also, add the MAP_CHGPROT flag to all arch headers (was MAP_NOINHERIT, changed on
Hugh Dickins' suggestion).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
---
include/asm-alpha/mman.h | 3 +++
include/asm-arm/mman.h | 3 +++
include/asm-arm26/mman.h | 3 +++
include/asm-cris/mman.h | 3 +++
include/asm-frv/mman.h | 3 +++
include/asm-generic/pgtable.h | 13 +++++++++++++
include/asm-h8300/mman.h | 3 +++
include/asm-i386/mman.h | 3 +++
include/asm-ia64/mman.h | 3 +++
include/asm-m32r/mman.h | 3 +++
include/asm-m68k/mman.h | 3 +++
include/asm-mips/mman.h | 3 +++
include/asm-parisc/mman.h | 3 +++
include/asm-powerpc/mman.h | 3 +++
include/asm-s390/mman.h | 3 +++
include/asm-sh/mman.h | 3 +++
include/asm-sparc/mman.h | 3 +++
include/asm-sparc64/mman.h | 3 +++
include/asm-x86_64/mman.h | 3 +++
include/asm-xtensa/mman.h | 3 +++
20 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/include/asm-alpha/mman.h b/include/asm-alpha/mman.h
index 90d7c35..71c1d06 100644
--- a/include/asm-alpha/mman.h
+++ b/include/asm-alpha/mman.h
@@ -28,6 +28,9 @@
#define MAP_NORESERVE 0x10000 /* don't check for reservations */
#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x40000 /* do not block on IO */
+#define MAP_CHGPROT 0x80000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MS_ASYNC 1 /* sync memory asynchronously */
#define MS_SYNC 2 /* synchronous memory sync */
diff --git a/include/asm-arm/mman.h b/include/asm-arm/mman.h
index 54570d2..a5b3c37 100644
--- a/include/asm-arm/mman.h
+++ b/include/asm-arm/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) page tables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-arm26/mman.h b/include/asm-arm26/mman.h
index 4000a6c..de73e1b 100644
--- a/include/asm-arm26/mman.h
+++ b/include/asm-arm26/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) page tables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-cris/mman.h b/include/asm-cris/mman.h
index 1c35e1b..a75ee61 100644
--- a/include/asm-cris/mman.h
+++ b/include/asm-cris/mman.h
@@ -12,6 +12,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-frv/mman.h b/include/asm-frv/mman.h
index b4371e9..320816d 100644
--- a/include/asm-frv/mman.h
+++ b/include/asm-frv/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 00c2343..a8ac660 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -263,4 +263,17 @@ static inline int pmd_none_or_clear_bad(pmd_t *pmd)
}
#endif /* !__ASSEMBLY__ */
+#ifndef __HAVE_ARCH_PTE_TO_PGPROT
+/* Wrappers for architectures which don't support yet page protections for
+ * remap_file_pages. */
+
+/* Dummy define - if the architecture has no special support, access is denied
+ * in VM_MANYPROTS vma's. */
+#define pte_to_pgprot(pte) __P000
+#define pte_file_to_pgprot(pte) __P000
+
+#define pgoff_prot_to_pte(off, prot) pgoff_to_pte(off)
+
+#endif
+
#endif /* _ASM_GENERIC_PGTABLE_H */
diff --git a/include/asm-h8300/mman.h b/include/asm-h8300/mman.h
index b9f104f..3ae27ca 100644
--- a/include/asm-h8300/mman.h
+++ b/include/asm-h8300/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-i386/mman.h b/include/asm-i386/mman.h
index 8fd9d7a..182452b 100644
--- a/include/asm-i386/mman.h
+++ b/include/asm-i386/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-ia64/mman.h b/include/asm-ia64/mman.h
index c73b878..81a9cff 100644
--- a/include/asm-ia64/mman.h
+++ b/include/asm-ia64/mman.h
@@ -18,6 +18,9 @@
#define MAP_NORESERVE 0x04000 /* don't check for reservations */
#define MAP_POPULATE 0x08000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-m32r/mman.h b/include/asm-m32r/mman.h
index 516a897..3d3f4fd 100644
--- a/include/asm-m32r/mman.h
+++ b/include/asm-m32r/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-m68k/mman.h b/include/asm-m68k/mman.h
index 1626d37..2ff6ae2 100644
--- a/include/asm-m68k/mman.h
+++ b/include/asm-m68k/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-mips/mman.h b/include/asm-mips/mman.h
index e4d6f1f..a60e657 100644
--- a/include/asm-mips/mman.h
+++ b/include/asm-mips/mman.h
@@ -46,6 +46,9 @@
#define MAP_LOCKED 0x8000 /* pages are locked */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x20000 /* do not block on IO */
+#define MAP_CHGPROT 0x40000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
/*
* Flags for msync
diff --git a/include/asm-parisc/mman.h b/include/asm-parisc/mman.h
index defe752..8fb8080 100644
--- a/include/asm-parisc/mman.h
+++ b/include/asm-parisc/mman.h
@@ -22,6 +22,9 @@
#define MAP_GROWSDOWN 0x8000 /* stack-like segment */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x20000 /* do not block on IO */
+#define MAP_CHGPROT 0x40000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MS_SYNC 1 /* synchronous memory sync */
#define MS_ASYNC 2 /* sync memory asynchronously */
diff --git a/include/asm-powerpc/mman.h b/include/asm-powerpc/mman.h
index 24cf664..56a76bb 100644
--- a/include/asm-powerpc/mman.h
+++ b/include/asm-powerpc/mman.h
@@ -23,5 +23,8 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#endif /* _ASM_POWERPC_MMAN_H */
diff --git a/include/asm-s390/mman.h b/include/asm-s390/mman.h
index 7839767..a8ff4f4 100644
--- a/include/asm-s390/mman.h
+++ b/include/asm-s390/mman.h
@@ -18,6 +18,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-sh/mman.h b/include/asm-sh/mman.h
index 156eb02..29eb229 100644
--- a/include/asm-sh/mman.h
+++ b/include/asm-sh/mman.h
@@ -10,6 +10,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) page tables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-sparc/mman.h b/include/asm-sparc/mman.h
index b7dc40b..2ac052e 100644
--- a/include/asm-sparc/mman.h
+++ b/include/asm-sparc/mman.h
@@ -21,6 +21,9 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
/* XXX Need to add flags to SunOS's mctl, mlockall, and madvise system
* XXX calls.
diff --git a/include/asm-sparc64/mman.h b/include/asm-sparc64/mman.h
index 8cc1860..ae3e438 100644
--- a/include/asm-sparc64/mman.h
+++ b/include/asm-sparc64/mman.h
@@ -21,6 +21,9 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
/* XXX Need to add flags to SunOS's mctl, mlockall, and madvise system
* XXX calls.
diff --git a/include/asm-x86_64/mman.h b/include/asm-x86_64/mman.h
index dd5cb05..ceffa4f 100644
--- a/include/asm-x86_64/mman.h
+++ b/include/asm-x86_64/mman.h
@@ -12,6 +12,9 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#define MAP_CHGPROT 0x20000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff --git a/include/asm-xtensa/mman.h b/include/asm-xtensa/mman.h
index 9b92620..a8435d7 100644
--- a/include/asm-xtensa/mman.h
+++ b/include/asm-xtensa/mman.h
@@ -53,6 +53,9 @@
#define MAP_LOCKED 0x8000 /* pages are locked */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x20000 /* do not block on IO */
+#define MAP_CHGPROT 0x40000 /* don't inherit the protection bits of
+ the underlying vma, to be passed to
+ remap_file_pages() only */
/*
* Flags for msync
--
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next prev parent reply other threads:[~2007-03-31 0:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-31 0:35 [PATCH 00/11] remap_file_pages protection support Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` [PATCH 01/11] RFP: new bitmask_trans in <linux/bitops.h> Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` Paolo 'Blaisorblade' Giarrusso [this message]
2007-03-31 0:35 ` [PATCH 03/11] RFP prot support: handle MANYPROTS VMAs Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` [PATCH 04/11] RFP prot support: disallow mprotect() on manyprots mappings Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` [PATCH 05/11] RFP prot support: introduce FAULT_SIGSEGV for protection checking Paolo 'Blaisorblade' Giarrusso, Paolo 'Blaisorblade' Giarrusso, Ingo Molnar
2007-03-31 0:35 ` [PATCH 06/11] RFP prot support: fix get_user_pages() on VM_MANYPROTS vmas Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` [PATCH 07/11] RFP prot support: uml, i386, x64 bits Paolo 'Blaisorblade' Giarrusso, Paolo 'Blaisorblade' Giarrusso, Ingo Molnar
2007-03-31 0:35 ` [PATCH 08/11] Fix comment about remap_file_pages Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:35 ` [PATCH 09/11] RFP prot support: enhance syscall interface Paolo 'Blaisorblade' Giarrusso, Ingo Molnar, Paolo 'Blaisorblade' Giarrusso
2007-03-31 0:36 ` [PATCH 10/11] RFP prot support: support private vma for MAP_POPULATE Paolo 'Blaisorblade' Giarrusso, Ingo Molnar
2007-03-31 0:36 ` [PATCH 11/11] RFP prot support: also set VM_NONLINEAR on nonuniform VMAs Paolo 'Blaisorblade' Giarrusso
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