David Rientjes wrote:
Date: Sun, 25 Mar 2007 23:07:43 -0800 From: Zachary Amsden <[EMAIL PROTECTED]>If you actually clear the bit, you need to: + pte_update_defer(vma->vm_mm, addr, ptep); The reason is, when updating PTEs, the hypervisor must be notified. Using atomic operations to do this is fine for all hypervisors I am aware of. However, for hypervisors which shadow page tables, if these PTE modifications are not trapped, you need a post-modification call to fulfill the update of the shadow page table. Cc: Zachary Amsden <[EMAIL PROTECTED]> Cc: Hugh Dickins <[EMAIL PROTECTED]> Signed-off-by: David Rientjes <[EMAIL PROTECTED]>
Acked-by: Zachary Amsden <[EMAIL PROTECTED]> David, thanks for cleaning this up. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
