[PATCH] powerpc/pseries/vas: Pass hw_cpu_id to node associativity HCALL

[Haren Myneni]

Generally the hypervisor decides to allocate a window on different
VAS instances. But if the user space wishes to allocate on the
current VAS instance where the process is executing, the kernel has
to pass associativity domain IDs to allocate VAS window HCALL. To
determine the associativity domain IDs for the current CPU, passing
smp_processor_id() to node associativity HCALL which may return
H_P2 (-55) error during DLPAR CPU event.

This patch fixes this issue by passing hard_smp_processor_id() with
VPHN_FLAG_VCPU flag (PAPR 14.11.6.1 H_HOME_NODE_ASSOCIATIVITY).

Signed-off-by: Haren Myneni <haren at linux.ibm.com>
---
 arch/powerpc/platforms/pseries/vas.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/vas.c b/arch/powerpc/platforms/pseries/vas.c
index fe33bdb620d5..533026fd1f40 100644
--- a/arch/powerpc/platforms/pseries/vas.c
+++ b/arch/powerpc/platforms/pseries/vas.c
@@ -348,7 +348,7 @@ static struct vas_window *vas_allocate_window(int vas_id, u64 flags,
 		 * So no unpacking needs to be done.
 		 */
 		rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, domain,
-				  VPHN_FLAG_VCPU, smp_processor_id());
+				  VPHN_FLAG_VCPU, hard_smp_processor_id());
 		if (rc != H_SUCCESS) {
 			pr_err("H_HOME_NODE_ASSOCIATIVITY error: %d\n", rc);
 			goto out;
-- 
2.26.3