From: Catalin Marinas <catalin.marinas@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org,
Will Deacon <will@kernel.org>,
Dave P Martin <Dave.Martin@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Andrey Konovalov <andreyknvl@google.com>,
Peter Collingbourne <pcc@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Kevin Brodsky <Kevin.Brodsky@arm.com>
Subject: [PATCH v7 13/29] mm: Introduce arch_calc_vm_flag_bits()
Date: Wed, 15 Jul 2020 18:08:28 +0100 [thread overview]
Message-ID: <20200715170844.30064-14-catalin.marinas@arm.com> (raw)
In-Reply-To: <20200715170844.30064-1-catalin.marinas@arm.com>
From: Kevin Brodsky <Kevin.Brodsky@arm.com>
Similarly to arch_calc_vm_prot_bits(), introduce a dummy
arch_calc_vm_flag_bits() invoked from calc_vm_flag_bits(). This macro
can be overridden by architectures to insert specific VM_* flags derived
from the mmap() MAP_* flags.
Signed-off-by: Kevin Brodsky <Kevin.Brodsky@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
---
Notes:
v6:
- Added comment on where the arch code should define overriding arch_*
macros (asm/mman.h).
v2:
- Updated the comment above arch_calc_vm_prot_bits().
- Changed author since this patch had already been posted (internally).
include/linux/mman.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/include/linux/mman.h b/include/linux/mman.h
index 4b08e9c9c538..9ea3f95faa90 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -74,13 +74,18 @@ static inline void vm_unacct_memory(long pages)
}
/*
- * Allow architectures to handle additional protection bits
+ * Allow architectures to handle additional protection and flag bits. The
+ * overriding macros must be defined in the arch-specific asm/mman.h file.
*/
#ifndef arch_calc_vm_prot_bits
#define arch_calc_vm_prot_bits(prot, pkey) 0
#endif
+#ifndef arch_calc_vm_flag_bits
+#define arch_calc_vm_flag_bits(flags) 0
+#endif
+
#ifndef arch_vm_get_page_prot
#define arch_vm_get_page_prot(vm_flags) __pgprot(0)
#endif
@@ -131,7 +136,8 @@ calc_vm_flag_bits(unsigned long flags)
return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) |
_calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) |
_calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ) |
- _calc_vm_trans(flags, MAP_SYNC, VM_SYNC );
+ _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ) |
+ arch_calc_vm_flag_bits(flags);
}
unsigned long vm_commit_limit(void);
next prev parent reply other threads:[~2020-07-15 17:09 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-15 17:08 [PATCH v7 00/26] arm64: Memory Tagging Extension user-space support Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 01/29] arm64: mte: system register definitions Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 02/29] arm64: mte: CPU feature detection and initial sysreg configuration Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 03/29] arm64: mte: Use Normal Tagged attributes for the linear map Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 04/29] arm64: mte: Add specific SIGSEGV codes Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 05/29] arm64: mte: Handle synchronous and asynchronous tag check faults Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 06/29] mm: Add PG_arch_2 page flag Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 07/29] mm: Preserve the PG_arch_2 flag in __split_huge_page_tail() Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 08/29] arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 09/29] arm64: mte: Tags-aware copy_{user_,}highpage() implementations Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 10/29] arm64: Avoid unnecessary clear_user_page() indirection Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 11/29] arm64: mte: Tags-aware aware memcmp_pages() implementation Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 12/29] arm64: mte: Handle the MAIR_EL1 changes for late CPU bring-up Catalin Marinas
2020-07-15 17:08 ` Catalin Marinas [this message]
2020-07-15 17:08 ` [PATCH v7 14/29] arm64: mte: Add PROT_MTE support to mmap() and mprotect() Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 15/29] mm: Introduce arch_validate_flags() Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 16/29] arm64: mte: Validate the PROT_MTE request via arch_validate_flags() Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 17/29] mm: Allow arm64 mmap(PROT_MTE) on RAM-based files Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 18/29] arm64: mte: Allow user control of the tag check mode via prctl() Catalin Marinas
2020-07-20 15:30 ` Kevin Brodsky
2020-07-20 17:00 ` Dave Martin
2020-07-22 10:28 ` Catalin Marinas
2020-07-23 19:33 ` Kevin Brodsky
2020-07-22 11:09 ` Catalin Marinas
2020-08-04 19:34 ` Kevin Brodsky
2020-08-05 9:24 ` Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 19/29] arm64: mte: Allow user control of the generated random tags " Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 20/29] arm64: mte: Restore the GCR_EL1 register after a suspend Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 21/29] arm64: mte: Allow {set,get}_tagged_addr_ctrl() on non-current tasks Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 22/29] arm64: mte: ptrace: Add PTRACE_{PEEK,POKE}MTETAGS support Catalin Marinas
2020-08-13 14:01 ` Luis Machado
2020-08-22 10:56 ` Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 23/29] arm64: mte: ptrace: Add NT_ARM_TAGGED_ADDR_CTRL regset Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 24/29] fs: Handle intra-page faults in copy_mount_options() Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 25/29] mm: Add arch hooks for saving/restoring tags Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 26/29] arm64: mte: Enable swap of tagged pages Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 27/29] arm64: mte: Save tags when hibernating Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 28/29] arm64: mte: Kconfig entry Catalin Marinas
2020-07-15 17:08 ` [PATCH v7 29/29] arm64: mte: Add Memory Tagging Extension documentation Catalin Marinas
2020-07-27 16:36 ` Szabolcs Nagy
2020-07-28 11:08 ` Dave Martin
2020-07-28 14:53 ` Szabolcs Nagy
2020-07-28 19:59 ` Catalin Marinas
2020-08-03 12:43 ` Szabolcs Nagy
2020-08-07 15:19 ` Catalin Marinas
2020-08-10 14:13 ` Szabolcs Nagy
2020-08-11 17:20 ` Catalin Marinas
2020-08-12 12:45 ` Szabolcs Nagy
2020-08-19 9:54 ` Catalin Marinas
2020-08-20 16:43 ` Szabolcs Nagy
2020-08-20 17:27 ` Paul Eggert
2020-08-22 11:31 ` Catalin Marinas
2020-08-22 11:28 ` Catalin Marinas
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