linux-kernel - [PATCH v4 0/2] x86/resctrl: Pass domain to target CPU

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Date: Wed, 28 Feb 2024 11:36:52 -0800
From: Tony Luck <tony.luck@...el.com>
To: Fenghua Yu <fenghua.yu@...el.com>,
	Reinette Chatre <reinette.chatre@...el.com>,
	Peter Newman <peternewman@...gle.com>,
	Jonathan Corbet <corbet@....net>,
	Shuah Khan <skhan@...uxfoundation.org>,
	x86@...nel.org
Cc: Shaopeng Tan <tan.shaopeng@...itsu.com>,
	James Morse <james.morse@....com>,
	Jamie Iles <quic_jiles@...cinc.com>,
	Babu Moger <babu.moger@....com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Drew Fustini <dfustini@...libre.com>,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	patches@...ts.linux.dev,
	Tony Luck <tony.luck@...el.com>
Subject: [PATCH v4 0/2] x86/resctrl: Pass domain to target CPU

When a function is called via IPI, it isn't possible for assertions
in source code to check that the right locks are held when those
locks were obtained by the sender of the IPI.

Restructure some code to avoid the need for the check.

Patch 1 has the actual fix

Patch 2 is just some code cleanups

Changes since V3: https://lore.kernel.org/all/20240222185039.72201-1-tony.luck@intel.com/

Reinette:
1) Improve commit comments in both patches by changing to
   imperative.

2) Move initialzation of "m.res" in domain_setup_ctrlval() from
   patch 1 to patch 2

Tony Luck (2):
  x86/resctrl: Pass domain to target CPU
  x86/resctrl: Simplify call convention for MSR update functions

 arch/x86/kernel/cpu/resctrl/internal.h    |  5 ++-
 arch/x86/kernel/cpu/resctrl/core.c        | 55 +++++++++--------------
 arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 42 +++++------------
 arch/x86/kernel/cpu/resctrl/rdtgroup.c    | 14 ++----
 4 files changed, 38 insertions(+), 78 deletions(-)


base-commit: c0d848fcb09d80a5f48b99f85e448185125ef59f
-- 
2.43.0