On Sun, Oct 24, 2021 at 07:58:03PM -0400, Jim Posen wrote: > Currently, when U-Boot is running in hypervisor mode on ARMv7-A CPUs > with virtualization extensions, the exception handling does not work. > A couple things need to change which are detailed in my earlier > message to the u-boot mailing list with the subject "Exception > handling in HYP mode on ARMv7-A". > > I have verified that this patch series works on the ODroid XU4 and > the Raspberry Pi 3B in Aarch32 mode when running in hypervisor mode. > One simple way to verify is by running the miscellaneous "exception" > command (CMD_EXCEPTION). > > > Jim Posen (5): > Compile for ARMv7-A with virtualization extensions > Hypervisor mode interrupt vector table > Set HVBAR register correctly > Remove dead code > Fix PC adjustment logic in exception handlers > > arch/arm/Makefile | 4 + > arch/arm/cpu/armv7/start.S | 5 ++ > arch/arm/include/asm/u-boot-arm.h | 14 ++-- > arch/arm/lib/interrupts.c | 26 +++--- > arch/arm/lib/relocate.S | 8 ++ > arch/arm/lib/vectors.S | 129 +++++++++++++++++++++++------- > arch/arm/mach-bcm283x/Kconfig | 3 + > arch/arm/mach-exynos/Kconfig | 1 + > 8 files changed, 139 insertions(+), 51 deletions(-)
This all seems fine, but I don't know enough about the specifics here to comment on the implementation. Is there any we we could also test this via QEMU for example? -- Tom
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