On Thu, 2011-12-01 at 08:53 +0800, Luck, Tony wrote: > > Is it possible to use the page_is_ram() and kamp() path in the patch to avoid the situation you mentioned? > > Maybe - it could certainly check the current attributes and match them. > > Not sure whether there might be a gap if the acpi mapping is long-lived, > and the other kernel mappings change ... though this is very rare to > switch attributes In the original acpi_read/write, we just call ioremap blindly, so the code in the below patch will not introduce new issue for ia64. Do you agree? https://lkml.org/lkml/2011/11/7/567 Best Regards, Huang Ying -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
