From: Sam Ravnborg <sam@xxxxxxxxxxxx> Date: Sun, 20 May 2012 17:33:34 +0200 >>From ddbad389ff8ab3b0c3c2a04fb31c3bffdc8e578f Mon Sep 17 00:00:00 2001 > From: Sam Ravnborg <sam@xxxxxxxxxxxx> > Date: Sun, 20 May 2012 17:27:53 +0200 > Subject: [PATCH 2/2] sparc32: use flushi when run-time patching in per_cpu_patch > > Davis S. Miller wrote: > " > The way we do that now is overkill. We only needed to use the MMU > cache ops when we had sun4c around because sun4c lacked support for > the "flush" instruction. > > But all sun4m and later chips have it so we can use it > unconditionally. > > So in the per_cpu_patch() code, get rid of the cache ops invocation, > and instead execute a "flush %reg" after each of the instruction patch > assignments, where %reg is set to the address of the instruction that > was stored into. > > Perhaps take the flushi() definition from asm/cacheflush_64.h and > place it into asm/cacheflush.h, then you can simply use that. > " > > Implemented as per suggestion. > Moved run-time patching before we call paging_init(), > so helper methods in paging_init() may utilise run-time patching too. > > Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx> Looks perfect, applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
