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| author | Jim Mattson <jmattson@google.com> | 2018-05-02 01:40:27 +0300 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2018-05-23 17:33:48 +0300 |
| commit | b348e7933c41b973dd953c4265ad1a60222c8ccf (patch) | |
| tree | 0f6efad96833b445279e494ae2dcd7e84baca283 /arch/x86/include/asm/vmx.h | |
| parent | 899a31f509ee1c6f7008c3265d1f625bfcb23311 (diff) | |
| download | linux-b348e7933c41b973dd953c4265ad1a60222c8ccf.tar.xz | |
KVM: nVMX: Restore the VMCS12 offsets for v4.0 fields
Changing the VMCS12 layout will break save/restore compatibility with
older kvm releases once the KVM_{GET,SET}_NESTED_STATE ioctls are
accepted upstream. Google has already been using these ioctls for some
time, and we implore the community not to disturb the existing layout.
Move the four most recently added fields to preserve the offsets of
the previously defined fields and reserve locations for the vmread and
vmwrite bitmaps, which will be used in the virtualization of VMCS
shadowing (to improve the performance of double-nesting).
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
[Kept the SDM order in vmcs_field_to_offset_table. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/vmx.h')
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 5db8b0b10766..425e6b8b9547 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -207,7 +207,9 @@ enum vmcs_field { EPTP_LIST_ADDRESS = 0x00002024, EPTP_LIST_ADDRESS_HIGH = 0x00002025, VMREAD_BITMAP = 0x00002026, + VMREAD_BITMAP_HIGH = 0x00002027, VMWRITE_BITMAP = 0x00002028, + VMWRITE_BITMAP_HIGH = 0x00002029, XSS_EXIT_BITMAP = 0x0000202C, XSS_EXIT_BITMAP_HIGH = 0x0000202D, TSC_MULTIPLIER = 0x00002032, |