[v2,0/4] linux-user: Emulate /proc/cpuinfo on s390x

Message

Ilya Leoshkevich June 5, 2023, 11:39 a.m. UTC

v1: https://lists.gnu.org/archive/html/qemu-devel/2023-06/msg00299.html
v1 -> v2: Add output examples (David).
          Simplify the CPU 0 special case (David).
          Fix building on s390x hosts.

Hi,

This series introduces /proc/cpuinfo linux-user emulation for s390x.
/proc/cpuinfo emulation already exists for sparc, hppa and riscv; this
series follows the pattern established for these platforms.

Patch 1 is a fix for an issue that I noticed while looking for ways to
get to the "identification" field.

Patches 2 and 3 introduce the necessary helpers.

Patch 4 is the actual implementation.

The trigger for this work is a bug report filed by Tulio [1], which has
to do with the llvm-project testcases failing under qemu-user.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2211472

Best regards,
Ilya

Ilya Leoshkevich (4):
  s390x/tcg: Fix CPU address returned by STIDP
  linux-user/elfload: Expose get_elf_hwcap() on s390x
  linux-user/elfload: Introduce elf_hwcap_str() on s390x
  linux-user: Emulate /proc/cpuinfo on s390x

 linux-user/elfload.c      |  29 ++++++++++-
 linux-user/loader.h       |   5 ++
 linux-user/syscall.c      | 106 +++++++++++++++++++++++++++++++++++++-
 target/s390x/cpu_models.c |   4 +-
 target/s390x/cpu_models.h |  10 +++-
 5 files changed, 148 insertions(+), 6 deletions(-)