From 5492830370171b6a4ede8a3bfba687a8d0f25fa5 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 10 Jul 2015 13:32:13 +0200 Subject: [PATCH] KVM: svm: handle KVM_X86_QUIRK_CD_NW_CLEARED in svm_get_mt_mask We can disable CD unconditionally when there is no assigned device. KVM now forces guest PAT to all-writeback in that case, so it makes sense to also force CR0.CD=0. When there are assigned devices, emulate cache-disabled operation through the page tables. This behavior is consistent with VMX microcode, where CD/NW are not touched by vmentry/vmexit. However, keep this dependent on the quirk because OVMF enables the caches too late. Signed-off-by: Paolo Bonzini --- Reading git-format-patch failed