Hi Paolo/Radim, Would you take a look? Thanks, -Kai > -----Original Message----- > From: Kai Huang [mailto:kai.huang@xxxxxxxxxxxxxxx] > Sent: Friday, May 3, 2019 10:09 PM > To: kvm@xxxxxxxxxxxxxxx; pbonzini@xxxxxxxxxx; rkrcmar@xxxxxxxxxx > Cc: Christopherson, Sean J <sean.j.christopherson@xxxxxxxxx>; > junaids@xxxxxxxxxx; thomas.lendacky@xxxxxxx; brijesh.singh@xxxxxxx; > guangrong.xiao@xxxxxxxxx; tglx@xxxxxxxxxxxxx; bp@xxxxxxxxx; > hpa@xxxxxxxxx; Huang, Kai <kai.huang@xxxxxxxxx> > Subject: [PATCH 0/2] Fix reserved bits calculation errors caused by MKTME > > This series fix reserved bits related calculation errors caused by MKTME. > MKTME repurposes high bits of physical address bits as 'keyID' thus they are > not reserved bits, and to honor such HW behavior those reduced bits are > taken away from boot_cpu_data.x86_phys_bits when MKTME is detected > (exactly how many bits are taken away is configured by BIOS). Currently KVM > asssumes bits from boot_cpu_data.x86_phys_bits to 51 are reserved bits, > which is not true anymore with MKTME, and needs fix. > > This series was splitted from the old patch I sent out around 2 weeks ago: > > kvm: x86: Fix several SPTE mask calculation errors caused by MKTME > > Changes to old patch: > > - splitted one patch into two patches. First patch is to move > kvm_set_mmio_spte_mask() as prerequisite. It doesn't impact > functionality. > Patch 2 does the real fix. > > - renamed shadow_first_rsvd_bits to shadow_phys_bits suggested by Sean. > > - refined comments and commit msg to be more concise. > > Btw sorry that I will be out next week and won't be able to reply email. > > Kai Huang (2): > kvm: x86: Move kvm_set_mmio_spte_mask() from x86.c to mmu.c > kvm: x86: Fix reserved bits related calculation errors caused by MKTME > > arch/x86/kvm/mmu.c | 61 > ++++++++++++++++++++++++++++++++++++++++++++++++++---- > arch/x86/kvm/x86.c | 31 --------------------------- > 2 files changed, 57 insertions(+), 35 deletions(-) > > -- > 2.13.6
