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Re: [PATCH 0/2] Change default pointer authentication algorithm on aarch


From: Pierrick Bouvier
Subject: Re: [PATCH 0/2] Change default pointer authentication algorithm on aarch64 to impdef
Date: Mon, 16 Dec 2024 09:53:25 -0800
User-agent: Mozilla Thunderbird

Hi,

On 12/4/24 13:12, Pierrick Bouvier wrote:
qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we
spent up to 50% of the emulation time running it (when using TCG).

Switching to pauth-impdef=on is often given as a solution to speed up execution.
Thus we talked about making it the new default.

The first patch introduce a new property (pauth-qarma5) to allow to select
current default algorithm.
The second one change the default.

Pierrick Bouvier (2):
   target/arm: add new property to select pauth-qarma5
   target/arm: change default pauth algorithm to impdef

  docs/system/arm/cpu-features.rst |  7 +++++--
  docs/system/introduction.rst     |  2 +-
  target/arm/cpu.h                 |  1 +
  target/arm/arm-qmp-cmds.c        |  2 +-
  target/arm/cpu64.c               | 30 +++++++++++++++++++-----------
  tests/qtest/arm-cpu-features.c   | 15 +++++++++++----
  6 files changed, 38 insertions(+), 19 deletions(-)


gentle ping on this series.

Thanks,
Pierrick



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