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Commit d750ea28 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
Browse files

KVM: MMU: remove oos_shadow parameter 



The unsync code should be stable now, maybe it is the time to remove this
parameter to cleanup the code a little bit

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent e459e322

Documentation/kernel-parameters.txt

+0 −3
Original line number Diff line number Diff line
@@ -1178,9 +1178,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. 
	kvm.ignore_msrs=[KVM] Ignore guest accesses to unhandled MSRs.

			Default is 0 (don't ignore, but inject #GP)



	kvm.oos_shadow=	[KVM] Disable out-of-sync shadow paging.

			Default is 1 (enabled)



	kvm.mmu_audit=	[KVM] This is a R/W parameter which allows audit

			KVM MMU at runtime.

			Default is 0 (off)

arch/x86/kvm/mmu.c

+0 −5
Original line number Diff line number Diff line
@@ -93,9 +93,6 @@ static int dbg = 0; 
module_param(dbg, bool, 0644);

#endif



static int oos_shadow = 1;

module_param(oos_shadow, bool, 0644);



#ifndef MMU_DEBUG

#define ASSERT(x) do { } while (0)

#else
@@ -2196,8 +2193,6 @@ static int mmu_need_write_protect(struct kvm_vcpu *vcpu, gfn_t gfn, 
			return 1;



		if (!need_unsync && !s->unsync) {

			if (!oos_shadow)

				return 1;

			need_unsync = true;

		}

	}