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[v1,0/4] HWCAP_CPUID registers for aarch64

Message ID 20190128173940.25813-1-alex.bennee@linaro.org
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Series HWCAP_CPUID registers for aarch64 | expand

Message

Alex Bennée Jan. 28, 2019, 5:39 p.m. UTC 
Hi,

I posted a series to expose some of the CPU registers to user-space.
The counter registers got merged at the time but the HW_CPUID had some
comments that needed addressing. I've re-spun the series and cleaned
it up, hopefully addressing the comments at the same time. The test
case has been expanded.

The ABI is described in the kernel document:

  https://www.kernel.org/doc/Documentation/arm64/cpu-feature-registers.txt

but from QEMU's point of view we just need to ensure the correct
values are reported for CONFIG_USER_ONLY.

Alex Bennée (4):
  target/arm: relax permission checks for HWCAP_CPUID registers
  target/arm: expose CPUID registers to userspace
  linux-user/elfload: enable HWCAP_CPUID for AArch64
  tests/tcg/aarch64: userspace system register test

 linux-user/elfload.c              |   1 +
 target/arm/cpu.h                  |  12 +++
 target/arm/helper.c               |  57 ++++++++++----
 tests/tcg/aarch64/Makefile.target |   2 +-
 tests/tcg/aarch64/sysregs.c       | 120 ++++++++++++++++++++++++++++++
 5 files changed, 175 insertions(+), 17 deletions(-)
 create mode 100644 tests/tcg/aarch64/sysregs.c

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2.17.1