On 20.04.2020 16:59, Andrew Cooper wrote:
> --- a/xen/arch/x86/efi/efi-boot.h
> +++ b/xen/arch/x86/efi/efi-boot.h
> @@ -238,7 +238,8 @@ static void __init noreturn efi_arch_post_exit_boot(void)
> /* Set system registers and transfer control. */
> asm volatile("pushq $0\n\tpopfq");
> rdmsrl(MSR_EFER, efer);
> - efer |= EFER_SCE;
> + if ( IS_ENABLED(CONFIG_PV) )
> + efer |= EFER_SCE;
> if ( cpu_has_nx )
> efer |= EFER_NX;
> wrmsrl(MSR_EFER, efer);
Switch to simply ORing in trampoline_efer here?
With or without the adjustment
Reviewed-by: Jan Beulich <jbeul...@suse.com>
Jan
