On 10/25/22 14:47, Maxim Levitsky wrote:
@@ -19,7 +19,8 @@ struct kvm_smram_state_32 {
u32 reserved1[62];
u32 smbase;
u32 smm_revision;
- u32 reserved2[5];
+ u32 reserved2[4];
+ u32 int_shadow; /* KVM extension */
u32 cr4; /* CR4 is not present in Intel/AMD SMRAM image */
u32 reserved3[5];
Of course the placement of KVM-specific fields is somewhat arbitrary,
but based on sandpile.org data I would place it at 0xFF1A ("reserved",
you have to search for 7F1Ah in the web page).
@@ -86,7 +87,7 @@ struct kvm_smram_state_64 {
u64 io_restart_rsi;
u64 io_restart_rdi;
u32 io_restart_dword;
- u32 reserved1;
+ u32 int_shadow;
u8 io_inst_restart;
u8 auto_hlt_restart;
u8 reserved2[6];
Likewise, based on AMD BKDG I would place this at 0xFECB after the "NMI
Mask" field (which unfortunately I learnt about only after "inventing"
HF_SMM_INSIDE_NMI_MASK).
I can do the changes myself, but please ack.
Paolo
