Nick Piggin wrote:
Rohit Seth wrote:
You mean by user space? If so, then it is user space responsibility to do the appropriate operations (like flush icache in this case).No, I mean places that set PG_arch_1. flush_dcache_page. This can happen for mapped pages in write, splice, install_arg_page looks questionable, direct IO...
Oh, and also ptrace! I think I was almost fooled by that attempt to flush the cache in copy_to_user_page. But that also fails if you map the underlying page with multiple virtual addresses (or processes, if the icache is not flushed on ctxsw), because those others won't have their caches flushed, right? -- SUSE Labs, Novell Inc. - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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