From: Ard Biesheuvel Date: Tue, 7 Jul 2020 10:07:10 +0000 (+0200) Subject: arm: qemu: disable the EFI workaround for older GRUB X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=e93626521a9db655aa1b46eb2630587c98059968;p=u-boot.git arm: qemu: disable the EFI workaround for older GRUB The QEMU/mach-virt targeted port of u-boot currently only runs on QEMU under TCG emulation, which does not model the caches at all, and so no users can exist that are relying on the GRUB hack for EFI boot. We will shortly enable support for running under KVM, but the GRUB hack (which disables all caches without doing cache cleaning by VA during ExitBootServices()) is likely to cause more problems than it solves, given that KVM hosts require correct maintenance if they incorporate non-architected system caches. So let's disable the GRUB hack by default on the QEMU/mach-virt port. Signed-off-by: Ard Biesheuvel Reviewed-by: Heinrich Schuchardt --- diff --git a/configs/qemu_arm_defconfig b/configs/qemu_arm_defconfig index 75bdce7708..1d2b4437cb 100644 --- a/configs/qemu_arm_defconfig +++ b/configs/qemu_arm_defconfig @@ -47,3 +47,4 @@ CONFIG_USB=y CONFIG_DM_USB=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_PCI=y +# CONFIG_EFI_GRUB_ARM32_WORKAROUND is not set