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Re: [PATCH v2 00/15] target/arm: Implement LVA, LPA, LPA2 features


From: Peter Maydell
Subject: Re: [PATCH v2 00/15] target/arm: Implement LVA, LPA, LPA2 features
Date: Thu, 17 Feb 2022 14:07:44 +0000

On Thu, 10 Feb 2022 at 04:04, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Changes for v2:
>   * Introduce FIELD_SEX64, instead of open-coding w/ sextract64.
>   * Set TCR_EL1 more completely for user-only.
>   * Continue to bound tsz within aa64_va_parameters;
>     provide an out-of-bound indicator for raising AddressSize fault.
>   * Split IPS patch.
>   * Fix debug registers for LVA.
>   * Fix long-format fsc for LPA2.
>   * Fix TLBI page shift.
>   * Validate TLBI granule vs TCR granule.
>
> Not done:
>   * Validate translation levels which accept blocks.
>
> There is still no upstream kernel support for FEAT_LPA2,
> so that is essentially untested.

This series seems to break 'make check-acceptance':

 (01/59) tests/avocado/boot_linux.py:BootLinuxAarch64.test_virt_tcg_gicv2:
INTERRUPTED: Test interrupted by SIGTERM\nRunner error occurred:
Timeout reached\nOriginal status: ERROR\n{'name':
'01-tests/avocado/boot_linux.py:BootLinuxAarch64.test_virt_tcg_gicv2',
'logdir': 
'/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/results/j...
(900.74 s)
 (02/59) tests/avocado/boot_linux.py:BootLinuxAarch64.test_virt_tcg_gicv3:
INTERRUPTED: Test interrupted by SIGTERM\nRunner error occurred:
Timeout reached\nOriginal status: ERROR\n{'name':
'02-tests/avocado/boot_linux.py:BootLinuxAarch64.test_virt_tcg_gicv3',
'logdir': 
'/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/results/j...
(900.71 s)

UEFI runs in the guest and seems to launch the kernel, but there's
no output from the kernel itself in the logfile. Last thing it
prints is:

EFI stub: Booting Linux Kernel...
EFI stub: EFI_RNG_PROTOCOL unavailable, no randomness supplied
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...
SetUefiImageMemoryAttributes - 0x000000007F500000 - 0x0000000000040000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007C190000 - 0x0000000000040000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007C140000 - 0x0000000000040000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007F4C0000 - 0x0000000000030000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007C0F0000 - 0x0000000000040000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007BFB0000 - 0x0000000000040000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007BE00000 - 0x0000000000030000
(0x0000000000000008)
SetUefiImageMemoryAttributes - 0x000000007BDC0000 - 0x0000000000030000
(0x0000000000000008)

This ought to be followed by the usual kernel boot log
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x000f0510]
etc but it isn't. Probably the kernel is crashing in early bootup
before it gets round to printing anything.

thanks
-- PMM



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