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From: Steve Capper <steve.capper@arm.com>
To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org
Cc: ard.biesheuvel@linaro.org, suzuki.poulose@arm.com,
	catalin.marinas@arm.com, Steve Capper <steve.capper@arm.com>,
	will.deacon@arm.com, jcm@redhat.com
Subject: [PATCH V5 3/7] arm64: mm: Define arch_get_mmap_end, arch_get_mmap_base
Date: Thu,  6 Dec 2018 22:50:38 +0000	[thread overview]
Message-ID: <20181206225042.11548-4-steve.capper@arm.com> (raw)
In-Reply-To: <20181206225042.11548-1-steve.capper@arm.com>

Now that we have DEFAULT_MAP_WINDOW defined, we can arch_get_mmap_end
and arch_get_mmap_base helpers to allow for high addresses in mmap.

Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm64/include/asm/processor.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 50586ca6bacb..fe95fd8b065e 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -72,6 +72,13 @@
 #define STACK_TOP		STACK_TOP_MAX
 #endif /* CONFIG_COMPAT */
 
+#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\
+				DEFAULT_MAP_WINDOW)
+
+#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \
+					base + TASK_SIZE - DEFAULT_MAP_WINDOW :\
+					base)
+
 extern phys_addr_t arm64_dma_phys_limit;
 #define ARCH_LOW_ADDRESS_LIMIT	(arm64_dma_phys_limit - 1)
 
-- 
2.19.2


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WARNING: multiple messages have this Message-ID (diff)
From: Steve Capper <steve.capper@arm.com>
To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org
Cc: catalin.marinas@arm.com, will.deacon@arm.com,
	ard.biesheuvel@linaro.org, suzuki.poulose@arm.com,
	jcm@redhat.com, Steve Capper <steve.capper@arm.com>
Subject: [PATCH V5 3/7] arm64: mm: Define arch_get_mmap_end, arch_get_mmap_base
Date: Thu,  6 Dec 2018 22:50:38 +0000	[thread overview]
Message-ID: <20181206225042.11548-4-steve.capper@arm.com> (raw)
In-Reply-To: <20181206225042.11548-1-steve.capper@arm.com>

Now that we have DEFAULT_MAP_WINDOW defined, we can arch_get_mmap_end
and arch_get_mmap_base helpers to allow for high addresses in mmap.

Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm64/include/asm/processor.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 50586ca6bacb..fe95fd8b065e 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -72,6 +72,13 @@
 #define STACK_TOP		STACK_TOP_MAX
 #endif /* CONFIG_COMPAT */
 
+#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\
+				DEFAULT_MAP_WINDOW)
+
+#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \
+					base + TASK_SIZE - DEFAULT_MAP_WINDOW :\
+					base)
+
 extern phys_addr_t arm64_dma_phys_limit;
 #define ARCH_LOW_ADDRESS_LIMIT	(arm64_dma_phys_limit - 1)
 
-- 
2.19.2

  parent reply	other threads:[~2018-12-06 22:51 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-06 22:50 [PATCH V5 0/7] 52-bit userspace VAs Steve Capper
2018-12-06 22:50 ` Steve Capper
2018-12-06 22:50 ` [PATCH V5 1/7] mm: mmap: Allow for "high" userspace addresses Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-07 19:56   ` Andrew Morton
2018-12-07 19:56     ` Andrew Morton
2018-12-06 22:50 ` [PATCH V5 2/7] arm64: mm: Introduce DEFAULT_MAP_WINDOW Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-06 22:50 ` Steve Capper [this message]
2018-12-06 22:50   ` [PATCH V5 3/7] arm64: mm: Define arch_get_mmap_end, arch_get_mmap_base Steve Capper
2018-12-06 22:50 ` [PATCH V5 4/7] arm64: mm: Offset TTBR1 to allow 52-bit PTRS_PER_PGD Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-07 11:21   ` Catalin Marinas
2018-12-07 11:21     ` Catalin Marinas
2018-12-07 12:04   ` Suzuki K Poulose
2018-12-07 12:04     ` Suzuki K Poulose
2018-12-06 22:50 ` [PATCH V5 5/7] arm64: mm: Prevent mismatched 52-bit VA support Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-07 10:47   ` Suzuki K Poulose
2018-12-07 10:47     ` Suzuki K Poulose
2018-12-07 15:26     ` Will Deacon
2018-12-07 15:26       ` Will Deacon
2018-12-07 17:28       ` Suzuki K Poulose
2018-12-07 17:28         ` Suzuki K Poulose
2018-12-10 13:36         ` Will Deacon
2018-12-10 13:36           ` Will Deacon
2018-12-10 16:04           ` Steve Capper
2018-12-10 16:04             ` Steve Capper
2018-12-10 16:18             ` Will Deacon
2018-12-10 16:18               ` Will Deacon
2018-12-10 16:55               ` Steve Capper
2018-12-10 16:55                 ` Steve Capper
2018-12-10 17:08                 ` Steve Capper
2018-12-10 17:08                   ` Steve Capper
2018-12-10 17:42                   ` Steve Capper
2018-12-10 17:42                     ` Steve Capper
2018-12-10 18:07                     ` Suzuki K Poulose
2018-12-10 18:07                       ` Suzuki K Poulose
2018-12-06 22:50 ` [PATCH V5 6/7] arm64: mm: introduce 52-bit userspace support Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-07 11:55   ` Catalin Marinas
2018-12-07 11:55     ` Catalin Marinas
2018-12-06 22:50 ` [PATCH V5 7/7] arm64: mm: Allow forcing all userspace addresses to 52-bit Steve Capper
2018-12-06 22:50   ` Steve Capper
2018-12-10 19:34 ` [PATCH V5 0/7] 52-bit userspace VAs Will Deacon
2018-12-10 19:34   ` Will Deacon
2018-12-11  9:13   ` Steve Capper
2018-12-11  9:13     ` Steve Capper

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