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Commit 65a45fa2 authored by David Vrabel's avatar David Vrabel Committed by Konrad Rzeszutek Wilk
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xen/p2m: avoid unneccesary TLB flush in m2p_remove_override() 



In m2p_remove_override() when removing the grant map from the kernel
mapping and replacing with a mapping to the original page, the grant
unmap will already have flushed the TLB and it is not necessary to do
it again after updating the mapping.

Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
parent 3eeef8f7

arch/x86/xen/p2m.c

+0 −1
Original line number Diff line number Diff line
@@ -1003,7 +1003,6 @@ int m2p_remove_override(struct page *page, 


			set_pte_at(&init_mm, address, ptep,

					pfn_pte(pfn, PAGE_KERNEL));

			__flush_tlb_single(address);

			kmap_op->host_addr = 0;

		}

	}