linux-kernel - [106/200] ARM: 6139/1: ARMv7: Use the Inner Shareable I-cache on MP

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Date:	Thu, 01 Jul 2010 10:43:16 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Catalin Marinas <catalin.marinas@....com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [106/200] ARM: 6139/1: ARMv7: Use the Inner Shareable I-cache on MP

2.6.34-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Santosh Shilimkar <santosh.shilimkar@...com>

commit a901ff715d53c109821cbbd9d7ea1f2a311646a9 upstream.

This patch fixes the flush_cache_all for ARMv7 SMP.It was
missing from commit b8349b569aae661dea9d59d7d2ee587ccea3336c

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...com>
Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index 06a90dc..37c8157 100644
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -91,7 +91,11 @@ ENTRY(v7_flush_kern_cache_all)
  THUMB(	stmfd	sp!, {r4-r7, r9-r11, lr}	)
 	bl	v7_flush_dcache_all
 	mov	r0, #0
+#ifdef CONFIG_SMP
+	mcr	p15, 0, r0, c7, c1, 0		@ invalidate I-cache inner shareable
+#else
 	mcr	p15, 0, r0, c7, c5, 0		@ I+BTB cache invalidate
+#endif
  ARM(	ldmfd	sp!, {r4-r5, r7, r9-r11, lr}	)
  THUMB(	ldmfd	sp!, {r4-r7, r9-r11, lr}	)
 	mov	pc, lr


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