Re: [PATCH v7 00/41] target/arm: Implement ARMv8.1-VHE

[Jonathan Cameron]

On Tue, 31 Mar 2020 11:59:13 -0700
Richard Henderson <address@hidden> wrote:

> On 3/31/20 8:33 AM, Jonathan Cameron wrote:
> > Just wondering if there are any known issues with this?  
> 
> Nope.  It works for me.
> Can you give us any more details.
> 

Unfortunately not a lot more to add.

I ran some sanity checks that it wasn't something else looking like an issue
in these patches.

All with 5.6 kernel and 5.0.0 rc0 qemu

1) sve=off but VHE still on. failed.
2) sve=off + VH bit not set. fine but obviously no VHE.
(dance with SVE required because of kernel checks for SVE before allowing
 no VHE kvm).
3) above tests run on mainline qemu just after VHE patches applied (just in case
   we have a regression from some other change).  No change.
4) EDK2 for the guest.  Synchronous exception. (works fine with no VHE)
0x00..05F9B2208

I do get an additional error sometimes such as the ld.so one here.

[   16.539375] Run /sbin/init as init process
Inconsistency detected by ld.so: rtld.c: 721: init_tls: Assertion `i == 
GL(dl_tls_max_dtv_idx)' failed!
[   17.780596] Kernel panic - not syncing: Attempted to kill init! 
exitcode=0x00007f00
[   17.847709] CPU: 0 PID: 1 Comm: init Not tainted 5.6.0 #356
[   17.897260] Hardware name: linux,dummy-virt (DT)
[   17.940007] Call trace:
[   17.962297]  dump_backtrace+0x0/0x190
[   17.993897]  show_stack+0x1c/0x28
[   18.022382]  dump_stack+0xb4/0xfc
[   18.050781]  panic+0x160/0x35c
[   18.077469]  do_exit+0x9a4/0xa08
[   18.105510]  do_group_exit+0x48/0xa8
[   18.136073]  __arm64_sys_exit_group+0x1c/0x20
[   18.173677]  el0_svc_common.constprop.0+0x70/0x168
[   18.218659]  do_el0_svc+0x28/0x88
[   18.247154]  el0_sync_handler+0x10c/0x180
[   18.281379]  el0_sync+0x140/0x180
[   18.310684] Kernel Offset: 0x2a67dcc00000 from 0xffff800010000000
[   18.362474] PHYS_OFFSET: 0xfffff79400000000
[   18.398314] CPU features: 0x40012,20c0a238
[   18.433416] Memory Limit: none
[   18.463648] ---[ end Kernel panic - not syncing: Attempted to kill init! 
exitcode=0x00007f00 ]---


Jonathan


> 
> r~