Commit ee6268ba authored Jul 25, 2018 by Liang Chen Committed by Paolo Bonzini Aug 06, 2018

KVM: x86: Skip pae_root shadow allocation if tdp enabled



Considering the fact that the pae_root shadow is not needed when
tdp is in use, skip the pae_root shadow page allocation to allow
mmu creation even not being able to obtain memory from DMA32
zone when particular cgroup cpuset.mems or mempolicy control is
applied.

Signed-off-by: Liang Chen <liangchen.linux@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent c2a4eadf

arch/x86/kvm/mmu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -5341,6 +5341,9 @@ static int alloc_mmu_pages(struct kvm_vcpu *vcpu)
		struct page *page;
		int i;

		if (tdp_enabled)
		return 0;

		/*
		* When emulating 32-bit mode, cr3 is only 32 bits even on x86_64.
		* Therefore we need to allocate shadow page tables in the first

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