3.11.10.4 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Taras Kondratiuk <[email protected]> commit b25f3e1c358434bf850220e04f28eebfc45eb634 upstream. Kexec disables outer cache before jumping to reboot code, but it doesn't flush it explicitly. Flush is done implicitly inside of l2x0_disable(). But some SoC's override default .disable handler and don't flush cache. This may lead to a corrupted memory during Kexec reboot on these platforms. This patch adds cache flush inside of OMAP4 and Highbank outer_cache.disable() handlers to make it consistent with default l2x0_disable(). Acked-by: Rob Herring <[email protected]> Acked-by: Santosh Shilimkar <[email protected]> Acked-by: Tony Lindgren <[email protected]> Signed-off-by: Taras Kondratiuk <[email protected]> Signed-off-by: Russell King <[email protected]> Cc: Wang Nan <[email protected]> Signed-off-by: Luis Henriques <[email protected]> --- arch/arm/mach-highbank/highbank.c | 1 + arch/arm/mach-omap2/omap4-common.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index d247cf2..4a929a2 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -71,6 +71,7 @@ void highbank_set_cpu_jump(int cpu, void *jump_addr) #ifdef CONFIG_CACHE_L2X0 static void highbank_l2x0_disable(void) { + outer_flush_all(); /* Disable PL310 L2 Cache controller */ highbank_smc1(0x102, 0x0); } diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index 5791143..3f44b16 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -163,6 +163,7 @@ void __iomem *omap4_get_l2cache_base(void) static void omap4_l2x0_disable(void) { + outer_flush_all(); /* Disable PL310 L2 Cache controller */ omap_smc1(0x102, 0x0); } -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
