[PATCH] x86_64: Use cpu_relax in poll loop in GART IOMMU (85f9eebc) · Commits · 方亚芬 / linux

Commit 85f9eebc authored Mar 25, 2006 by

Andi Kleen Committed by Linus Torvalds Mar 25, 2006

[PATCH] x86_64: Use cpu_relax in poll loop in GART IOMMU



The code waits for the GART to clear the TLB flush bit. Use cpu_relax
in this time to allow hypervisors to yield the CPU in this time.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 77d910f5

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