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From: Doug Berger <opendmb@gmail.com>
To: catalin.marinas@arm.com
Cc: mark.rutland@arm.com, wangkefeng.wang@huawei.com,
	linus.walleij@linaro.org, will.deacon@arm.com, mingo@kernel.org,
	panand@redhat.com, f.fainelli@gmail.com, jonathanh@nvidia.com,
	bgolaszewski@baylibre.com, bcm-kernel-feedback-list@broadcom.com,
	shijie.huang@arm.com, opendmb@gmail.com, treding@nvidia.com,
	devicetree@vger.kernel.org, vladimir.murzin@arm.com,
	cmetcalf@mellanox.com, suzuki.poulose@arm.com,
	andre.przywara@arm.com, robh+dt@kernel.org,
	gregory.0xf0@gmail.com, sandeepa.s.prabhu@gmail.com,
	horms+renesas@verge.net.au, linux-arm-kernel@lists.infradead.org,
	mirza.krak@gmail.com, linux-kernel@vger.kernel.org,
	james.morse@arm.com, olof@lixom.net, computersforpeace@gmail.com
Subject: [PATCH 2/9] arm64: mm: mark fault_info __ro_after_init
Date: Fri, 24 Mar 2017 07:46:25 -0700	[thread overview]
Message-ID: <20170324144632.5896-3-opendmb@gmail.com> (raw)
In-Reply-To: <20170324144632.5896-1-opendmb@gmail.com>

The fault_info table must be made writeable to allow installation
of custom memory abort handlers, but it can be made read-only
after initialization to provide some protection.

Signed-off-by: Doug Berger <opendmb@gmail.com>
---
 arch/arm64/mm/fault.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index cdf1260f1005..43319ed58a47 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -493,7 +493,7 @@ static struct fault_info {
 	int	sig;
 	int	code;
 	const char *name;
-} fault_info[] = {
+} fault_info[] __ro_after_init = {
 	{ do_bad,		SIGBUS,  0,		"ttbr address size fault"	},
 	{ do_bad,		SIGBUS,  0,		"level 1 address size fault"	},
 	{ do_bad,		SIGBUS,  0,		"level 2 address size fault"	},
-- 
2.12.0

  parent reply	other threads:[~2017-03-24 14:46 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-24 14:46 [PATCH 0/9] bus: brcmstb_gisb: add support for GISBv7 arbiter Doug Berger
2017-03-24 14:46 ` [PATCH 1/9] arm64: mm: Allow installation of memory abort handlers Doug Berger
2017-03-24 14:46 ` Doug Berger [this message]
2017-03-24 14:46 ` [PATCH 3/9] arm64: mm: install SError abort handler Doug Berger
     [not found]   ` <20170324144632.5896-4-opendmb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-03-24 15:16     ` Mark Rutland
2017-03-24 16:48       ` Doug Berger
2017-03-24 17:35         ` Mark Rutland
2017-03-24 17:53           ` Florian Fainelli
     [not found]             ` <710c4142-ae20-9715-3e51-910a2073a64e-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-03-24 18:31               ` Mark Rutland
2017-03-24 19:02                 ` Florian Fainelli
2017-03-25 10:06                   ` Marc Zyngier
     [not found]                     ` <867f3doekq.fsf-5wv7dgnIgG8@public.gmane.org>
2017-03-27 20:19                       ` Florian Fainelli
     [not found] ` <20170324144632.5896-1-opendmb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-03-24 14:46   ` [PATCH 4/9] bus: brcmstb_gisb: Use register offsets with writes too Doug Berger
     [not found]     ` <20170324144632.5896-5-opendmb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-03-25  5:21       ` Gregory Fong
2017-03-24 14:46 ` [PATCH 5/9] bus: brcmstb_gisb: Correct hooking of ARM aborts Doug Berger
2017-03-24 14:46 ` [PATCH 6/9] bus: brcmstb_gisb: correct support for 64-bit address output Doug Berger
     [not found]   ` <20170324144632.5896-7-opendmb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-03-25  5:36     ` Gregory Fong
2017-03-24 14:46 ` [PATCH 7/9] bus: brcmstb_gisb: Add ARM64 support Doug Berger
2017-03-24 14:46 ` [PATCH 8/9] bus: brcmstb_gisb: add ARM64 SError support Doug Berger
2017-03-24 14:46 ` [PATCH 9/9] bus: brcmstb_gisb: update to support new revision Doug Berger
2017-03-24 15:03 ` [PATCH 0/9] bus: brcmstb_gisb: add support for GISBv7 arbiter Mark Rutland
2017-03-24 16:02   ` Doug Berger

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