| Message ID | 20211024235808.1926508-1-jim.posen@gmail.com |
|---|---|
| Headers | show |
| Series | Exception handling in HYP mode on ARMv7-A | expand |
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?
I sent a new version of the patch series with a couple of fixes and instructions for testing with QEMU. On Tue, Nov 23, 2021 at 10:24 AM Tom Rini <trini@konsulko.com> wrote: > 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 >