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From: steve.capper@arm.com (Steve Capper)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] arm64: mm: Activate 52-bit userspace VA support
Date: Wed, 29 Aug 2018 13:45:43 +0100	[thread overview]
Message-ID: <20180829124543.25314-6-steve.capper@arm.com> (raw)
In-Reply-To: <20180829124543.25314-1-steve.capper@arm.com>

We have all the pieces in place now to support a 52-bit userspace VA.
This patch enables this logic for systems running with a 48-bit VA and a
64KB PAGE_SIZE.

Signed-off-by: Steve Capper <steve.capper@arm.com>
---
 arch/arm64/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 29e75b47becd..2561b541c9df 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -691,6 +691,10 @@ config ARM64_PA_BITS_52
 
 endchoice
 
+config ARM64_TRY_52BIT_VA
+	def_bool y
+	depends on ARM64_VA_BITS_48 && ARM64_64K_PAGES
+
 config ARM64_PA_BITS
 	int
 	default 48 if ARM64_PA_BITS_48
-- 
2.11.0

  parent reply	other threads:[~2018-08-29 12:45 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-29 12:45 [PATCH 0/5] 52-bit userspace VAs Steve Capper
2018-08-29 12:45 ` [PATCH 1/5] arm64: mm: Introduce DEFAULT_MAP_WINDOW Steve Capper
2018-08-29 12:45 ` [PATCH 2/5] arm64: mm: introduce 52-bit userspace support Steve Capper
2018-09-21 17:40   ` Catalin Marinas
2018-09-27 13:50     ` Steve Capper
2018-09-27 14:48       ` Steve Capper
2018-10-01 10:28         ` Catalin Marinas
2018-10-01 10:50           ` Steve Capper
2018-08-29 12:45 ` [PATCH 3/5] arm64: mm: Copy over arch_get_unmapped_area Steve Capper
2018-09-07  6:15   ` Jon Masters
2018-09-07 14:04     ` Steve Capper
2018-10-17 14:52       ` Steve Capper
2018-08-29 12:45 ` [PATCH 4/5] arm64: mmap: Allow for "high" 52-bit VA allocations Steve Capper
2018-09-21 17:11   ` Catalin Marinas
2018-08-29 12:45 ` Steve Capper [this message]
2018-09-07  6:22 ` [PATCH 0/5] 52-bit userspace VAs Jon Masters
2018-09-07 13:59   ` Steve Capper

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