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Re: [PATCH v3 0/3] linux-user/ppc: Deliver SIGTRAP on tw[i]/td[i]

From: Matheus K. Ferst
Subject: Re: [PATCH v3 0/3] linux-user/ppc: Deliver SIGTRAP on tw[i]/td[i]
Date: Mon, 21 Feb 2022 17:34:47 -0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0


All patches reviewed and the series still applies to master with no conflicts.

On 13/01/2022 14:04, matheus.ferst@eldorado.org.br wrote:
From: Matheus Ferst <matheus.ferst@eldorado.org.br>

In the review of 66c6b40aba1, Richard Henderson suggested[1] using
"trap" instead of ".long 0x0" to generate the signal to test XER
save/restore behavior. However, linux-user aborts when a trap
exception is raised, so we kept the patch with SIGILL.

This patch series is a follow-up to remove the cpu_abort call, deliver
SIGTRAP instead (using TRAP_BRKPT as si_code), and apply the suggestion
to the signal_save_restore_xer test.

The first patch removes the "qemu: fatal: Tried to call a TRAP" reported
in issue #588[2]. The third patch is an RFC to address the other logged
messages of "Unknown privilege violation (03)".

[1] https://lists.gnu.org/archive/html/qemu-ppc/2021-10/msg00143.html
[2] https://gitlab.com/qemu-project/qemu/-/issues/588

  - RFC to address the "Unknown privilege violation (03)" in #588.

  - Based-on rth's patch to use force_sig_fault and avoid merge conflicts

Matheus Ferst (3):
   linux-user/ppc: deliver SIGTRAP on POWERPC_EXCP_TRAP
   tests/tcg/ppc64le: change signal_save_restore_xer to use SIGTRAP
   target/ppc: Fix gen_priv_exception error value in mfspr/mtspr

  linux-user/ppc/cpu_loop.c                   | 3 ++-
  target/ppc/translate.c                      | 8 ++++----
  tests/tcg/ppc64le/signal_save_restore_xer.c | 8 ++++----
  3 files changed, 10 insertions(+), 9 deletions(-)

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