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

matheus.ferst@eldorado.org.br posted 3 patches 2 weeks ago
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git fetch https://github.com/patchew-project/qemu tags/patchew/20220113170456.1796911-1-matheus.ferst@eldorado.org.br
Maintainers: Daniel Henrique Barboza <danielhb413@gmail.com>, Laurent Vivier <laurent@vivier.eu>, Greg Kurz <groug@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, "Cédric Le Goater" <clg@kaod.org>
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(-)

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

Posted by matheus.ferst@eldorado.org.br 2 weeks ago
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

v3:
 - RFC to address the "Unknown privilege violation (03)" in #588.

v2:
 - 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(-)

-- 
2.25.1