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From: Andrey Konovalov <andreyknvl@google.com>
To: Dmitry Vyukov <dvyukov@google.com>,
	Vincenzo Frascino <vincenzo.frascino@arm.com>,
	 Catalin Marinas <catalin.marinas@arm.com>,
	kasan-dev@googlegroups.com
Cc: Marco Elver <elver@google.com>,
	Elena Petrova <lenaptr@google.com>,
	Kevin Brodsky <kevin.brodsky@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Branislav Rankov <Branislav.Rankov@arm.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Alexander Potapenko <glider@google.com>,
	linux-arm-kernel@lists.infradead.org,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Evgenii Stepanov <eugenis@google.com>
Subject: [PATCH 26/35] kasan, arm64: Enable TBI EL1
Date: Fri, 14 Aug 2020 19:27:08 +0200	[thread overview]
Message-ID: <518da1e5169a4e343caa3c37feed5ad551b77a34.1597425745.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1597425745.git.andreyknvl@google.com>

From: Vincenzo Frascino <vincenzo.frascino@arm.com>

Hardware tag-based KASAN relies on Memory Tagging Extension (MTE) that is
built on top of the Top Byte Ignore (TBI) feature.

Enable in-kernel TBI when CONFIG_KASAN_HW_TAGS is turned on by enabling
the TCR_TBI1 bit in proc.S.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 arch/arm64/mm/proc.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 152d74f2cc9c..6880ddaa5144 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -38,7 +38,7 @@
 /* PTWs cacheable, inner/outer WBWA */
 #define TCR_CACHE_FLAGS	TCR_IRGN_WBWA | TCR_ORGN_WBWA
 
-#ifdef CONFIG_KASAN_SW_TAGS
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
 #define TCR_KASAN_FLAGS TCR_TBI1
 #else
 #define TCR_KASAN_FLAGS 0
-- 
2.28.0.220.ged08abb693-goog


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  parent reply	other threads:[~2020-08-14 19:09 UTC|newest]

Thread overview: 101+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-14 17:26 [PATCH 00/35] kasan: add hardware tag-based mode for arm64 Andrey Konovalov
2020-08-14 17:26 ` [PATCH 01/35] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov
2020-08-14 17:26 ` [PATCH 02/35] kasan: group vmalloc code Andrey Konovalov
2020-08-14 17:26 ` [PATCH 03/35] kasan: shadow declarations only for software modes Andrey Konovalov
2020-09-18 14:55   ` Marco Elver
2020-09-18 14:56     ` Andrey Konovalov
2020-08-14 17:26 ` [PATCH 04/35] kasan: rename (un)poison_shadow to (un)poison_memory Andrey Konovalov
2020-08-14 17:26 ` [PATCH 05/35] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov
2020-08-14 17:26 ` [PATCH 06/35] kasan: only build init.c for software modes Andrey Konovalov
2020-08-14 17:26 ` [PATCH 07/35] kasan: split out shadow.c from common.c Andrey Konovalov
2020-08-14 17:26 ` [PATCH 08/35] kasan: rename generic/tags_report.c files Andrey Konovalov
2020-08-14 17:26 ` [PATCH 09/35] kasan: don't duplicate config dependencies Andrey Konovalov
2020-08-14 17:26 ` [PATCH 10/35] kasan: hide invalid free check implementation Andrey Konovalov
2020-08-14 17:26 ` [PATCH 11/35] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov
2020-08-14 17:26 ` [PATCH 12/35] kasan, arm64: only init shadow for software modes Andrey Konovalov
2020-08-14 17:26 ` [PATCH 13/35] kasan, arm64: only use kasan_depth " Andrey Konovalov
2020-08-14 17:26 ` [PATCH 14/35] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov
2020-08-14 17:26 ` [PATCH 15/35] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov
2020-08-14 17:26 ` [PATCH 16/35] kasan: kasan_non_canonical_hook only for software modes Andrey Konovalov
2020-08-14 17:26 ` [PATCH 17/35] kasan: rename SHADOW layout macros to META Andrey Konovalov
2020-08-14 17:27 ` [PATCH 18/35] kasan: separate metadata_fetch_row for each mode Andrey Konovalov
2020-08-14 17:27 ` [PATCH 19/35] kasan: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov
2020-08-27  8:04   ` Catalin Marinas
2020-08-27  9:54     ` Vincenzo Frascino
2020-08-27 12:02       ` Andrey Konovalov
2020-08-14 17:27 ` [PATCH 20/35] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov
2020-08-27  9:38   ` Catalin Marinas
2020-08-27 10:31     ` Vincenzo Frascino
2020-08-27 11:10       ` Catalin Marinas
2020-08-27 11:24         ` Vincenzo Frascino
2020-08-27 12:46     ` Andrey Konovalov
2020-09-08 13:23     ` Andrey Konovalov
2020-09-08 14:50       ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 21/35] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov
2020-08-27  9:54   ` Catalin Marinas
2020-08-27 10:44     ` Vincenzo Frascino
2020-08-27 12:31     ` Andrey Konovalov
2020-08-27 13:10       ` Catalin Marinas
2020-08-27 13:34         ` Andrey Konovalov
2020-08-27 14:56           ` Catalin Marinas
2020-08-27 19:14             ` Evgenii Stepanov
2020-08-28  9:56               ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 22/35] arm64: mte: Enable in-kernel MTE Andrey Konovalov
2020-08-27 10:01   ` Catalin Marinas
2020-08-27 10:46     ` Vincenzo Frascino
2020-09-08 14:39   ` Andrey Konovalov
2020-09-08 14:52     ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 23/35] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov
2020-08-14 17:27 ` [PATCH 24/35] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov
2020-08-27 10:38   ` Catalin Marinas
2020-08-27 10:56     ` Vincenzo Frascino
2020-08-27 12:16       ` Catalin Marinas
2020-09-08 14:02         ` Andrey Konovalov
2020-09-08 14:53           ` Andrey Konovalov
2020-09-08 15:39           ` Catalin Marinas
2020-09-08 19:41             ` Derrick McKee
2020-09-08 13:58     ` Andrey Konovalov
2020-09-08 15:16       ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 25/35] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-08-27 11:33   ` Vincenzo Frascino
2020-08-27 12:22     ` Andrey Konovalov
2020-08-14 17:27 ` Andrey Konovalov [this message]
2020-08-27 10:40   ` [PATCH 26/35] kasan, arm64: Enable TBI EL1 Catalin Marinas
2020-08-27 11:05     ` Vincenzo Frascino
2020-08-27 11:13       ` Catalin Marinas
2020-08-27 11:17         ` Vincenzo Frascino
2020-08-27 12:43           ` Andrey Konovalov
2020-08-27 13:45             ` Vincenzo Frascino
2020-08-27 14:36               ` Andrey Konovalov
2020-09-08 13:18     ` Andrey Konovalov
2020-09-08 14:06       ` Catalin Marinas
2020-09-08 14:12         ` Andrey Konovalov
2020-09-08 14:41           ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 27/35] kasan, arm64: align allocations for HW_TAGS Andrey Konovalov
2020-08-14 17:27 ` [PATCH 28/35] kasan: define KASAN_GRANULE_SIZE " Andrey Konovalov
2020-08-27 10:41   ` Catalin Marinas
2020-08-27 11:07     ` Vincenzo Frascino
2020-08-27 12:05       ` Andrey Konovalov
2020-08-14 17:27 ` [PATCH 29/35] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov
2020-08-14 17:27 ` [PATCH 30/35] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov
2020-08-14 17:27 ` [PATCH 31/35] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov
2020-08-27 10:45   ` Catalin Marinas
2020-08-27 11:35     ` Vincenzo Frascino
2020-08-27 12:37     ` Andrey Konovalov
2020-08-14 17:27 ` [PATCH 32/35] kasan, arm64: print report from tag fault handler Andrey Konovalov
2020-08-27 10:48   ` Catalin Marinas
2020-08-27 12:11     ` Vincenzo Frascino
2020-08-27 12:34     ` Andrey Konovalov
2020-08-27 14:21       ` Catalin Marinas
2020-08-14 17:27 ` [PATCH 33/35] kasan, slub: reset tags when accessing metadata Andrey Konovalov
2020-08-14 17:27 ` [PATCH 34/35] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-08-14 17:27 ` [PATCH 35/35] kasan: add documentation for hardware tag-based mode Andrey Konovalov
2020-08-28 11:12   ` Marco Elver
2020-08-28 12:28     ` Andrey Konovalov
2020-09-14 19:06 ` [PATCH 00/35] kasan: add hardware tag-based mode for arm64 Derrick McKee
2020-09-14 20:04   ` Andrey Konovalov
2020-09-14 21:36     ` Derrick McKee
2020-09-14 22:41       ` Derrick McKee
2020-09-14 22:50         ` Andrey Konovalov
2020-09-15  9:46           ` Derrick McKee
2020-09-15 17:51             ` Derrick McKee

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