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authorArjan van de Ven <arjan@infradead.org>2008-01-30 13:34:06 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:34:06 +0100
commit75cbade8ea3127a84e3da7c2c15808e54f0df7e8 (patch)
treeb91fd5e8f9f5f8da0da55a7783c70fc3149cbf2d /sound/pci/intel8x0.c
parente81d5dc41b67349c06e80658227c9156738f0df1 (diff)
x86: a new API for drivers/etc to control cache and other page attributes
Right now, if drivers or other code want to change, say, a cache attribute of a page, the only API they have is change_page_attr(). c-p-a is a really bad API for this, because it forces the caller to know *ALL* the attributes he wants for the page, not just the 1 thing he wants to change. So code that wants to set a page uncachable, needs to be aware of the NX status as well etc etc etc. This patch introduces a set of new APIs for this, set_pages_<attr> and set_memory_<attr>, that offer a logical change to the user, and leave all attributes not implied by the requested logical change alone. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'sound/pci/intel8x0.c')
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