Re: [PATCH] sh: mach-ecovec24: update ecovec24 defconfig

[Matt Fleming <matt@console-pimps.org>]

On Mon, Nov 30, 2009 at 07:11:29PM +0900, Kuninori Morimoto wrote:
> 
> Dear Paul
> 
> > > because currect kernel can not use CONFIG_CACHE_WRITEBACK
> > >
> > Uhm, why not? Where is the bug report on this?
> 
> Now I searched by git bisect
> I tested on ms7724se / ecovec24
> 
> -------------------------
> eb3118f652ea7751ecf6a7e467bb637895e3be3b is first bad commit
> commit eb3118f652ea7751ecf6a7e467bb637895e3be3b
> Author: Matt Fleming <matt@console-pimps.org>
> Date:   Thu Oct 29 21:53:30 2009 +0000
> 
> sh: Do not apply virt_to_phys() to a physical address
> 

Could you apply this patch and post the backtrace?

diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 6bfd08d..8440b12 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -89,6 +89,8 @@ static inline void flush_cache_one(unsigned long start, unsigned long phys)
 {
 	unsigned long flags, exec_offset = 0;
 
+	WARN_ON(!(phys >= __MEMORY_START && phys < __MEMORY_START + __MEMORY_SIZE));
+
 	/*
 	 * All types of SH-4 require PC to be uncached to operate on the I-cache.
 	 * Some types of SH-4 require PC to be uncached to operate on the D-cache.