On 7/27/2023 1:26 PM, Chao Gao wrote:
On Thu, Jul 20, 2023 at 11:03:44PM -0400, Yang Weijiang wrote:
Two XSAVES state bits are introduced for CET:
IA32_XSS:[bit 11]: Control saving/restoring user mode CET states
IA32_XSS:[bit 12]: Control saving/restoring supervisor mode CET states.
Six VMCS fields are introduced for CET:
{HOST,GUEST}_S_CET: Stores CET settings for kernel mode.
{HOST,GUEST}_SSP: Stores shadow stack pointer of current active task/thread.
{HOST,GUEST}_INTR_SSP_TABLE: Stores current active MSR_IA32_INT_SSP_TAB.
On Intel platforms, two additional bits are defined in VM_EXIT and VM_ENTRY
control fields:
If VM_EXIT_LOAD_HOST_CET_STATE = 1, the host CET states are restored from
Nit: s/VM_EXIT_LOAD_HOST_CET_STATE/VM_EXIT_LOAD_CET_STATE
to align with the name you are actually using.
the following VMCS fields at VM-Exit:
HOST_S_CET
HOST_SSP
HOST_INTR_SSP_TABLE
If VM_ENTRY_LOAD_GUEST_CET_STATE = 1, the guest CET states are loaded from
Nit: s/VM_ENTRY_LOAD_GUEST_CET_STATE/VM_ENTRY_LOAD_CET_STATE
Sure, will change it, thanks a lot!
the following VMCS fields at VM-Entry:
GUEST_S_CET
GUEST_SSP
GUEST_INTR_SSP_TABLE
Co-developed-by: Zhang Yi Z <yi.z.zhang@xxxxxxxxxxxxxxx>
Signed-off-by: Zhang Yi Z <yi.z.zhang@xxxxxxxxxxxxxxx>
Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx>
Reviewed-by: Chao Gao <chao.gao@xxxxxxxxx>
[...]
