[v2,06/37] kasan: only build init.c for software modes

Message ID	b154864a1b17319c865fddd01a4bca5aaa73aff5.1600204505.git.andreyknvl@google.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=2pn3=CY=kvack.org=owner-linux-mm@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 44A6320770 Date: Tue, 15 Sep 2020 23:15:48 +0200 In-Reply-To: <cover.1600204505.git.andreyknvl@google.com> Message-Id: <b154864a1b17319c865fddd01a4bca5aaa73aff5.1600204505.git.andreyknvl@google.com> Mime-Version: 1.0 References: <cover.1600204505.git.andreyknvl@google.com> Subject: [PATCH v2 06/37] kasan: only build init.c for software modes 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: Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com>, Evgenii Stepanov <eugenis@google.com>, Elena Petrova <lenaptr@google.com>, Branislav Rankov <Branislav.Rankov@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>, Andrew Morton <akpm@linux-foundation.org>, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	kasan: add hardware tag-based mode for arm64 \| expand [v2,00/37] kasan: add hardware tag-based mode for arm64 [v2,01/37] kasan: KASAN_VMALLOC depends on KASAN_GENERIC [v2,02/37] kasan: group vmalloc code [v2,03/37] kasan: shadow declarations only for software modes [v2,04/37] kasan: rename (un)poison_shadow to (un)poison_memory [v2,05/37] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* [v2,06/37] kasan: only build init.c for software modes [v2,07/37] kasan: split out shadow.c from common.c [v2,08/37] kasan: rename generic/tags_report.c files [v2,09/37] kasan: don't duplicate config dependencies [v2,10/37] kasan: hide invalid free check implementation [v2,11/37] kasan: decode stack frame only with KASAN_STACK_ENABLE [v2,12/37] kasan, arm64: only init shadow for software modes [v2,13/37] kasan, arm64: only use kasan_depth for software modes [v2,14/37] kasan: rename addr_has_shadow to addr_has_metadata [v2,15/37] kasan: rename print_shadow_for_address to print_memory_metadata [v2,16/37] kasan: kasan_non_canonical_hook only for software modes [v2,17/37] kasan: rename SHADOW layout macros to META [v2,18/37] kasan: separate metadata_fetch_row for each mode [v2,19/37] kasan: don't allow SW_TAGS with ARM64_MTE [v2,20/37] kasan: rename tags.c to tags_sw.c [v2,21/37] kasan: introduce CONFIG_KASAN_HW_TAGS [v2,22/37] arm64: mte: Add in-kernel MTE helpers [v2,23/37] arm64: kasan: Add arch layer for memory tagging helpers [v2,24/37] arm64: mte: Add in-kernel tag fault handler [v2,25/37] arm64: kasan: Enable in-kernel MTE [v2,26/37] arm64: mte: Convert gcr_user into an exclude mask [v2,27/37] arm64: mte: Switch GCR_EL1 in kernel entry and exit [v2,28/37] arm64: kasan: Enable TBI EL1 [v2,29/37] arm64: kasan: Align allocations for HW_TAGS [v2,30/37] kasan: define KASAN_GRANULE_SIZE for HW_TAGS [v2,31/37] kasan, x86, s390: update undef CONFIG_KASAN [v2,32/37] kasan, arm64: expand CONFIG_KASAN checks [v2,33/37] kasan, arm64: implement HW_TAGS runtime [v2,34/37] kasan, arm64: print report from tag fault handler [v2,35/37] kasan, slub: reset tags when accessing metadata [v2,36/37] kasan, arm64: enable CONFIG_KASAN_HW_TAGS [v2,37/37] kasan: add documentation for hardware tag-based mode

Message ID

b154864a1b17319c865fddd01a4bca5aaa73aff5.1600204505.git.andreyknvl@google.com (mailing list archive)

State

New, archived

Headers

DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 44A6320770
Date: Tue, 15 Sep 2020 23:15:48 +0200
In-Reply-To: <cover.1600204505.git.andreyknvl@google.com>
Message-Id: 
 <b154864a1b17319c865fddd01a4bca5aaa73aff5.1600204505.git.andreyknvl@google.com>
Mime-Version: 1.0
References: <cover.1600204505.git.andreyknvl@google.com>
Subject: [PATCH v2 06/37] kasan: only build init.c for software modes
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: Andrey Ryabinin <aryabinin@virtuozzo.com>,
 Alexander Potapenko <glider@google.com>,
	Marco Elver <elver@google.com>, Evgenii Stepanov <eugenis@google.com>,
	Elena Petrova <lenaptr@google.com>,
 Branislav Rankov <Branislav.Rankov@arm.com>,
	Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
 linux-arm-kernel@lists.infradead.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Andrey Konovalov <andreyknvl@google.com>
Content-Type: text/plain; charset="UTF-8"
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

kasan: add hardware tag-based mode for arm64 | expand

Commit Message

Andrey Konovalov Sept. 15, 2020, 9:15 p.m. UTC

This is a preparatory commit for the upcoming addition of a new hardware
tag-based (MTE-based) KASAN mode.

The new mode won't be using shadow memory, so only build init.c that
contains shadow initialization code for software modes.

No functional changes for software modes.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
Change-Id: I8d68c47345afc1dbedadde738f34a874dcae5080
---
 mm/kasan/Makefile | 6 +++---
 mm/kasan/init.c   | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/kasan/Makefile b/mm/kasan/Makefile
index 370d970e5ab5..7cf685bb51bd 100644
--- a/mm/kasan/Makefile
+++ b/mm/kasan/Makefile
@@ -29,6 +29,6 @@  CFLAGS_report.o := $(CC_FLAGS_KASAN_RUNTIME)
 CFLAGS_tags.o := $(CC_FLAGS_KASAN_RUNTIME)
 CFLAGS_tags_report.o := $(CC_FLAGS_KASAN_RUNTIME)
 
-obj-$(CONFIG_KASAN) := common.o init.o report.o
-obj-$(CONFIG_KASAN_GENERIC) += generic.o generic_report.o quarantine.o
-obj-$(CONFIG_KASAN_SW_TAGS) += tags.o tags_report.o
+obj-$(CONFIG_KASAN) := common.o report.o
+obj-$(CONFIG_KASAN_GENERIC) += init.o generic.o generic_report.o quarantine.o
+obj-$(CONFIG_KASAN_SW_TAGS) += init.o tags.o tags_report.o
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index 754b641c83c7..20f5e1ab8d95 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -1,6 +1,6 @@ 
 // SPDX-License-Identifier: GPL-2.0
 /*
- * This file contains some kasan initialization code.
+ * This file contains KASAN shadow initialization code.
  *
  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
  * Author: Andrey Ryabinin <ryabinin.a.a@gmail.com>

[v2,06/37] kasan: only build init.c for software modes

Commit Message

Patch