From: Russell King <rmk+kernel@armlinux.org.uk>
To: linux-arm-kernel@lists.infradead.org
Cc: Marc Zyngier <marc.zyngier@arm.com>,
Florian Fainelli <f.fainelli@gmail.com>,
kvmarm@lists.cs.columbia.edu,
Christoffer Dall <christoffer.dall@linaro.org>
Subject: [PATCH 02/14] ARM: bugs: prepare processor bug infrastructure
Date: Wed, 16 May 2018 12:00:47 +0100 [thread overview]
Message-ID: <E1fIuAp-0003jj-H5@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20180516105949.GJ16141@n2100.armlinux.org.uk>
Prepare the processor bug infrastructure so that it can be expanded to
check for per-processor bugs.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
arch/arm/include/asm/bugs.h | 4 ++--
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/bugs.c | 9 +++++++++
3 files changed, 12 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/kernel/bugs.c
diff --git a/arch/arm/include/asm/bugs.h b/arch/arm/include/asm/bugs.h
index a97f1ea708d1..ed122d294f3f 100644
--- a/arch/arm/include/asm/bugs.h
+++ b/arch/arm/include/asm/bugs.h
@@ -10,10 +10,10 @@
#ifndef __ASM_BUGS_H
#define __ASM_BUGS_H
-#ifdef CONFIG_MMU
extern void check_writebuffer_bugs(void);
-#define check_bugs() check_writebuffer_bugs()
+#ifdef CONFIG_MMU
+extern void check_bugs(void);
#else
#define check_bugs() do { } while (0)
#endif
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index b59ac4bf82b8..8cad59465af3 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -31,6 +31,7 @@ else
obj-y += entry-armv.o
endif
+obj-$(CONFIG_MMU) += bugs.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ISA_DMA_API) += dma.o
obj-$(CONFIG_FIQ) += fiq.o fiqasm.o
diff --git a/arch/arm/kernel/bugs.c b/arch/arm/kernel/bugs.c
new file mode 100644
index 000000000000..88024028bb70
--- /dev/null
+++ b/arch/arm/kernel/bugs.c
@@ -0,0 +1,9 @@
+// SPDX-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <asm/bugs.h>
+#include <asm/proc-fns.h>
+
+void __init check_bugs(void)
+{
+ check_writebuffer_bugs();
+}
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: rmk+kernel@armlinux.org.uk (Russell King)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 02/14] ARM: bugs: prepare processor bug infrastructure
Date: Wed, 16 May 2018 12:00:47 +0100 [thread overview]
Message-ID: <E1fIuAp-0003jj-H5@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20180516105949.GJ16141@n2100.armlinux.org.uk>
Prepare the processor bug infrastructure so that it can be expanded to
check for per-processor bugs.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
arch/arm/include/asm/bugs.h | 4 ++--
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/bugs.c | 9 +++++++++
3 files changed, 12 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/kernel/bugs.c
diff --git a/arch/arm/include/asm/bugs.h b/arch/arm/include/asm/bugs.h
index a97f1ea708d1..ed122d294f3f 100644
--- a/arch/arm/include/asm/bugs.h
+++ b/arch/arm/include/asm/bugs.h
@@ -10,10 +10,10 @@
#ifndef __ASM_BUGS_H
#define __ASM_BUGS_H
-#ifdef CONFIG_MMU
extern void check_writebuffer_bugs(void);
-#define check_bugs() check_writebuffer_bugs()
+#ifdef CONFIG_MMU
+extern void check_bugs(void);
#else
#define check_bugs() do { } while (0)
#endif
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index b59ac4bf82b8..8cad59465af3 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -31,6 +31,7 @@ else
obj-y += entry-armv.o
endif
+obj-$(CONFIG_MMU) += bugs.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ISA_DMA_API) += dma.o
obj-$(CONFIG_FIQ) += fiq.o fiqasm.o
diff --git a/arch/arm/kernel/bugs.c b/arch/arm/kernel/bugs.c
new file mode 100644
index 000000000000..88024028bb70
--- /dev/null
+++ b/arch/arm/kernel/bugs.c
@@ -0,0 +1,9 @@
+// SPDX-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <asm/bugs.h>
+#include <asm/proc-fns.h>
+
+void __init check_bugs(void)
+{
+ check_writebuffer_bugs();
+}
--
2.7.4
next prev parent reply other threads:[~2018-05-16 11:00 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-16 10:59 [PATCH 0/14] ARM Spectre variant 2 fixes Russell King - ARM Linux
2018-05-16 10:59 ` Russell King - ARM Linux
2018-05-16 11:00 ` [PATCH 01/14] ARM: add CPU part numbers for Cortex A73, A75 and Brahma B15 Russell King
2018-05-16 11:00 ` Russell King
2018-05-16 16:19 ` Florian Fainelli
2018-05-16 16:19 ` Florian Fainelli
2018-05-16 11:00 ` Russell King [this message]
2018-05-16 11:00 ` [PATCH 02/14] ARM: bugs: prepare processor bug infrastructure Russell King
2018-05-16 16:21 ` Florian Fainelli
2018-05-16 16:21 ` Florian Fainelli
2018-05-16 11:00 ` [PATCH 03/14] ARM: bugs: hook processor bug checking into SMP and suspend paths Russell King
2018-05-16 11:00 ` Russell King
2018-05-16 16:23 ` Florian Fainelli
2018-05-16 16:23 ` Florian Fainelli
2018-05-19 10:13 ` Russell King - ARM Linux
2018-05-19 10:13 ` Russell King - ARM Linux
2018-05-16 11:00 ` [PATCH 04/14] ARM: bugs: add support for per-processor bug checking Russell King
2018-05-16 11:00 ` Russell King
2018-05-16 16:23 ` Florian Fainelli
2018-05-16 16:23 ` Florian Fainelli
2018-05-16 11:01 ` [PATCH 05/14] ARM: spectre: add Kconfig symbol for CPUs vulnerable to Spectre Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 16:24 ` Florian Fainelli
2018-05-16 16:24 ` Florian Fainelli
2018-05-16 11:01 ` [PATCH 06/14] ARM: spectre-v2: harden branch predictor on context switches Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 11:33 ` Vladimir Murzin
2018-05-16 11:33 ` Vladimir Murzin
2018-05-16 11:01 ` [PATCH 07/14] ARM: spectre-v2: add Cortex A8 and A15 validation of the IBE bit Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 16:33 ` Florian Fainelli
2018-05-16 16:33 ` Florian Fainelli
2018-05-16 16:34 ` Florian Fainelli
2018-05-16 16:34 ` Florian Fainelli
2018-05-22 10:38 ` Geert Uytterhoeven
2018-05-22 10:38 ` Geert Uytterhoeven
2018-05-22 10:55 ` Russell King - ARM Linux
2018-05-22 10:55 ` Russell King - ARM Linux
2018-05-16 11:01 ` [PATCH 08/14] ARM: spectre-v2: harden user aborts in kernel space Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 16:35 ` Florian Fainelli
2018-05-16 16:35 ` Florian Fainelli
2018-05-16 11:01 ` [PATCH 09/14] ARM: spectre-v2: add PSCI based hardening Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 17:01 ` Marc Zyngier
2018-05-16 17:01 ` Marc Zyngier
2018-05-16 11:01 ` [PATCH 10/14] ARM: KVM: invalidate BTB on guest exit for Cortex-A12/A17 Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 11:01 ` [PATCH 11/14] ARM: KVM: invalidate icache on guest exit for Cortex-A15 Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 11:01 ` [PATCH 12/14] ARM: spectre-v2: KVM: invalidate icache on guest exit for Brahma B15 Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 16:27 ` Florian Fainelli
2018-05-16 16:27 ` Florian Fainelli
2018-05-16 11:01 ` [PATCH 13/14] ARM: KVM: Add SMCCC_ARCH_WORKAROUND_1 fast handling Russell King
2018-05-16 11:01 ` Russell King
2018-05-16 11:01 ` [PATCH 14/14] ARM: KVM: report support for SMCCC_ARCH_WORKAROUND_1 Russell King
2018-05-16 11:01 ` Russell King
2018-05-21 11:42 [PATCH v2 00/14] ARM Spectre variant 2 fixes Russell King - ARM Linux
2018-05-21 11:44 ` [PATCH 02/14] ARM: bugs: prepare processor bug infrastructure Russell King
2018-05-21 11:44 ` Russell King
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