Thread (3 messages) 3 messages, 1 author, 12d ago
COOLING12d
Revisions (2)
  1. v3 current
  2. v4 [diff vs current]

[PATCH v3 2/2] powerpc: enable to run posix cpu timers in task context

From: Vishal Chourasia <hidden>
Date: 2026-07-09 06:33:20
Also in: kvm, lkml
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

From: Shrikanth Hegde <redacted>

From: Shrikanth Hegde <redacted>

Now that all kvm entry to guest paths handle the task work
using the generic framework, enable HAVE_POSIX_CPU_TIMERS_TASK_WORK
which allows running posix cpu timers in task context instead of running
them in hardirq. This would is a necessary step towards enabling
PREEMPT_RT on powerNV systems.

Signed-off-by: Shrikanth Hegde <redacted>
Signed-off-by: Vishal Chourasia <redacted>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index f7ce5fff81f0..51555a0b1a26 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -281,6 +281,7 @@ config PPC
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP
 	select HAVE_PREEMPT_DYNAMIC_KEY
+	select HAVE_POSIX_CPU_TIMERS_TASK_WORK
 	select HAVE_RETHOOK			if KPROBES
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_RELIABLE_STACKTRACE
-- 
2.54.0

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