Mark writes to hypervisor ipi state so that KCSAN recognises these asynchronous issue of kvmppc_{set,clear}_host_ipi to be intended, with atomic writes.
Signed-off-by: Rohan McLure <rmcl...@linux.ibm.com> --- arch/powerpc/include/asm/kvm_ppc.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index bc57d058ad5b..d701df006c08 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -548,12 +548,12 @@ static inline void kvmppc_set_host_ipi(int cpu) * pairs with the barrier in kvmppc_clear_host_ipi() */ smp_mb(); - paca_ptrs[cpu]->kvm_hstate.host_ipi = 1; + WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 1); } static inline void kvmppc_clear_host_ipi(int cpu) { - paca_ptrs[cpu]->kvm_hstate.host_ipi = 0; + WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 0); /* * order clearing of host_ipi flag vs. processing of IPI messages * -- 2.37.2