| Message ID | 20190319054007.2268-1-net147@gmail.com |
|---|---|
| State | Changes Requested |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
| Series | [U-Boot] ARM: HYP/non-sec: Don't enable ARMV7_LPAE for old sunxi kernels | expand |
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu <net147@gmail.com> wrote: > > Old sunxi kernels fail to boot with ARMV7_LPAE enabled. Any idea why? I don't have relevant stuff with to test this.
Hi Jagan, On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki <jagan@amarulasolutions.com> wrote: > On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu <net147@gmail.com> wrote: > > > > Old sunxi kernels fail to boot with ARMV7_LPAE enabled. > > Any idea why? I don't have relevant stuff with to test this. > I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...". I bisected the issue to: https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ecdfc96ba2a No problems booting mainline kernel. Thanks. Regards, Jonathan
On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu <net147@gmail.com> wrote: > > Hi Jagan, > > On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki <jagan@amarulasolutions.com> wrote: >> >> On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu <net147@gmail.com> wrote: >> > >> > Old sunxi kernels fail to boot with ARMV7_LPAE enabled. >> >> Any idea why? I don't have relevant stuff with to test this. > > I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...". > > I bisected the issue to: > https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ecdfc96ba2a > > No problems booting mainline kernel. Can you update full details of bug on the commit message.
> From: Jagan Teki <jagan@amarulasolutions.com> > Date: Fri, 12 Apr 2019 12:02:06 +0530 > > On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu <net147@gmail.com> wrote: > > > > Hi Jagan, > > > > On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki <jagan@amarulasolutions.com> wrote: > >> > >> On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu <net147@gmail.com> wrote: > >> > > >> > Old sunxi kernels fail to boot with ARMV7_LPAE enabled. > >> > >> Any idea why? I don't have relevant stuff with to test this. > > > > I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...". > > > > I bisected the issue to: > > https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ecdfc96ba2a > > > > No problems booting mainline kernel. > > Can you update full details of bug on the commit message. Technically I think the right thing to do would be disabling ARMV7_VIRT as my understanding is that booting into HYP mode doesn't work without LPAE support.
Mark Kettenis wrote on 04/12/2019 03:03 PM: >> From: Jagan Teki <jagan@amarulasolutions.com> >> Date: Fri, 12 Apr 2019 12:02:06 +0530 >> >> On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu <net147@gmail.com> wrote: >>> >>> Hi Jagan, >>> >>> On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki <jagan@amarulasolutions.com> wrote: >>>> >>>> On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu <net147@gmail.com> wrote: >>>>> >>>>> Old sunxi kernels fail to boot with ARMV7_LPAE enabled. >>>> >>>> Any idea why? I don't have relevant stuff with to test this. >>> >>> I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...". >>> >>> I bisected the issue to: >>> https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ecdfc96ba2a >>> >>> No problems booting mainline kernel. >> >> Can you update full details of bug on the commit message. > > Technically I think the right thing to do would be disabling > ARMV7_VIRT as my understanding is that booting into HYP mode doesn't > work without LPAE support. Some days ago I tried to disable HYP mode for SVC mode. But with SVC the PSCI is not loading (u-boot bug?), and without PSCI only the 1st core of the CPU gets used. I had documented the case here: https://lists.denx.de/pipermail/u-boot/2019-April/364192.html
diff --git a/arch/arm/cpu/armv7/Kconfig b/arch/arm/cpu/armv7/Kconfig index 73d57a2aae..cdb7e402b4 100644 --- a/arch/arm/cpu/armv7/Kconfig +++ b/arch/arm/cpu/armv7/Kconfig @@ -53,7 +53,7 @@ config ARMV7_PSCI_NR_CPUS config ARMV7_LPAE bool "Use LPAE page table format" if EXPERT depends on CPU_V7A - default y if ARMV7_VIRT + default y if ARMV7_VIRT && !OLD_SUNXI_KERNEL_COMPAT ---help--- Say Y here to use the long descriptor page table format. This is required if U-Boot runs in HYP mode.
Old sunxi kernels fail to boot with ARMV7_LPAE enabled. Signed-off-by: Jonathan Liu <net147@gmail.com> --- arch/arm/cpu/armv7/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)