On 09/01/2018 07:25, Wei Wang wrote: > This patch shows an alternative approach to the one posted here: > https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1580364.html > > The advantages are > 1) Simpler; > 2) More reasonable because this is used to fill the hardware security > hole, for all the x86 cpus that physically support the two CPUIDs, > which means the hole already exists physically. All the VMs should > use this feature no matter what CPU model they are using. So, exposing > the two CPUIDs as long as they are physically supported by the hardware, > and this doesn't require the QEMU side hardcode as usual. > > When the related feature bits are added to the kernel, and we can simply > change it to: > best->edx |= F(SPEC_CTRL) | F(PRED_CMD); Is this meant to replace the whole series or just patch 1/7? The functions in patch 1/7 are used later by vmx.c and svm.c. Paolo
