| Message ID | 20200707100711.7446-3-ardb@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Fixes for running U-boot under QEMU/KVM | expand |
On Tue, Jul 07, 2020 at 12:07:08PM +0200, Ard Biesheuvel wrote: > QEMU's mach-virt machine only supports selecting CPU models that > implement the virtualization extensions, and are therefore guaranteed > to support LPAE as well. > > Initially, QEMU would not allow emulating these CPUs running in HYP > mode (or EL2, for AArch64), but today, it also contains a complete > implementation of the virtualization extensions themselves. > > This means we could be running U-Boot in HYP mode, in which case the > LPAE long descriptor page table format is the only format that is > supported. If we are not running in HYP mode, we can use either. > > So let's enable CONFIG_ARMV7_LPAE for qemu_arm_defconfig so that we > get the best support for running with the MMU and caches enabled at > any privilege level. > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Applied to u-boot/master, thanks! -- Tom
diff --git a/configs/qemu_arm_defconfig b/configs/qemu_arm_defconfig index a8473988bd76..75bdce7708c7 100644 --- a/configs/qemu_arm_defconfig +++ b/configs/qemu_arm_defconfig @@ -1,5 +1,6 @@ CONFIG_ARM=y CONFIG_ARM_SMCCC=y +CONFIG_ARMV7_LPAE=y CONFIG_ARCH_QEMU=y CONFIG_ENV_SIZE=0x40000 CONFIG_ENV_SECT_SIZE=0x40000