On 06/28/2012 05:02 AM, Takuya Yoshikawa wrote: > When we invalidate a THP page, we call the handler with the same > rmap_pde argument 512 times in the following loop: > > for each guest page in the range > for each level > unmap using rmap > > This patch avoids these extra handler calls by changing the loop order > like this: > > for each level > for each rmap in the range > unmap using rmap > > With the preceding patches in the patch series, this made THP page > invalidation more than 5 times faster on our x86 host: the host became > more responsive during swapping the guest's memory as a result. > > Note: in the new code we could not use trace_kvm_age_page(), so we just > dropped the point from kvm_handle_hva_range(). > Can't it be pushed to handler()? -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
