With 6caa5812e2d1 ("KVM: arm64: Use generic KVM xfer to guest work
function") all arm64 exit paths are properly equipped to handle the
POSIX timers' task work.
And with a68773bd32d9 ("arm64: Select POSIX_CPU_TIMERS_TASK_WORK") we
now handle the timers in thread context.
This allows for KVM and PREEMPT_RT to coexist, so update Kconfig to
reflect that.
Signed-off-by: Nicolas Saenz Julienne <[email protected]>
---
I guess this could be squashed into 19614b91cc83 ("ARM64: Allow to
enable RT")
Note: I did test this on an Ampere Mt. Jade based machine.
arch/arm64/Kconfig | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 6bd4acc2be02..260866cf53c9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -89,7 +89,7 @@ config ARM64
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
select ARCH_SUPPORTS_NUMA_BALANCING
- select ARCH_SUPPORTS_RT if HAVE_POSIX_CPU_TIMERS_TASK_WORK
+ select ARCH_SUPPORTS_RT
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION if COMPAT
select ARCH_WANT_DEFAULT_BPF_JIT
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
@@ -216,7 +216,6 @@ config ARM64
select PCI_DOMAINS_GENERIC if PCI
select PCI_ECAM if (ACPI && PCI)
select PCI_SYSCALL if PCI
- select HAVE_POSIX_CPU_TIMERS_TASK_WORK if !KVM
select POWER_RESET
select POWER_SUPPLY
select SPARSE_IRQ
--
2.33.1
On 2021-11-23 10:59:28 [+0100], Nicolas Saenz Julienne wrote:
> With 6caa5812e2d1 ("KVM: arm64: Use generic KVM xfer to guest work
> function") all arm64 exit paths are properly equipped to handle the
> POSIX timers' task work.
>
> And with a68773bd32d9 ("arm64: Select POSIX_CPU_TIMERS_TASK_WORK") we
> now handle the timers in thread context.
>
> This allows for KVM and PREEMPT_RT to coexist, so update Kconfig to
> reflect that.
>
> Signed-off-by: Nicolas Saenz Julienne <[email protected]>
applied.
Sebastian