linux-kernel - [PATCH 0/2] powerpc: kvm: generic framework and run posix timers in task context

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Message-ID: <20250421102837.78515-1-sshegde@linux.ibm.com>
Date: Mon, 21 Apr 2025 15:58:35 +0530
From: Shrikanth Hegde <sshegde@...ux.ibm.com>
To: maddy@...ux.ibm.com, linuxppc-dev@...ts.ozlabs.org
Cc: npiggin@...il.com, christophe.leroy@...roup.eu, sshegde@...ux.ibm.com,
        gautam@...ux.ibm.com, vaibhav@...ux.ibm.com, bigeasy@...utronix.de,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] powerpc: kvm: generic framework and run posix timers in task context

From: Gautam Menghani <gautam@...ux.ibm.com>

This is an effort to use the generic kvm infra which handles check for 
need_resched, handling signals etc. i.e xfer_to_guest_mode_handle_work. 

kvm guests boots and runs stress-ng CPU stressor on PowerVM and on PowerNV. 
preempt=full and preempt=lazy was tested on PowerNV and in both cases the
KVM guest boots and runs stress-ng CPU stressor.

Please let me know if any specific testing to be done.  

Kept the patches separate since they differ functionally, but kept them
is a series since 2nd patch depends on functionality of 1st. Also this
could help in git bisect.  

This is based on tip/master

Shrikanth Hegde (2):
  powerpc: kvm: use generic transfer to guest mode work
  powerpc: enable to run posix cpu timers in task context

 arch/powerpc/Kconfig         |  2 ++
 arch/powerpc/kvm/book3s_hv.c | 13 +++++++------
 arch/powerpc/kvm/powerpc.c   | 22 ++++++++--------------
 3 files changed, 17 insertions(+), 20 deletions(-)

-- 
2.48.1