linux-kernel - [RFC PATCH v2 0/1] x86/pkeys: update PKRU to enable pkey 0

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Message-Id: <20240321215622.3396410-1-aruna.ramakrishna@oracle.com>
Date: Thu, 21 Mar 2024 21:56:21 +0000
From: Aruna Ramakrishna <aruna.ramakrishna@...cle.com>
To: linux-kernel@...r.kernel.org
Cc: x86@...nel.org, dave.hansen@...ux.intel.com, tglx@...utronix.de,
        matthias.neugschwandtner@...cle.com, andrew.brownsword@...cle.com
Subject: [RFC PATCH v2 0/1] x86/pkeys: update PKRU to enable pkey 0

v2 updates:
- PKRU is passed as a parameter from handle_signal() all the way to
copy_fpregs_to_sigframe(), where it actually updates PKRU in the
sigframe

I'm working on adding a test case in
tools/testing/selftests/mm/protection_keys.c.

Aruna Ramakrishna (1):
  x86/pkeys: update PKRU to enable pkey 0 before XSAVE

 arch/x86/include/asm/fpu/signal.h  |  3 +-
 arch/x86/include/asm/sighandling.h | 10 +++----
 arch/x86/kernel/fpu/signal.c       | 44 ++++++++++++++++++++++++++----
 arch/x86/kernel/fpu/xstate.c       | 13 +++++++++
 arch/x86/kernel/fpu/xstate.h       |  1 +
 arch/x86/kernel/signal.c           | 40 +++++++++++++++++++++------
 arch/x86/kernel/signal_32.c        |  8 +++---
 arch/x86/kernel/signal_64.c        |  9 +++---
 8 files changed, 101 insertions(+), 27 deletions(-)

-- 
2.39.3