On 28.05.24 г. 12:55 ч., Kirill A. Shutemov wrote:
TDX guests run with MCA enabled (CR4.MCE=1b) from the very start. If that bit is cleared during CR4 register reprogramming during boot or kexec flows, a #VE exception will be raised which the guest kernel cannot handle it. Therefore, make sure the CR4.MCE setting is preserved over kexec too and avoid raising any #VEs. The change doesn't affect non-TDX-guest environments. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Reviewed-by: Nikolay Borisov <nik.borisov@xxxxxxxx>
