[Xen-devel] [PATCH] xen:arm: use SMC64 version function id on ARM64

[Brijesh Singh <brijeshkumar.singh@xxxxxxx>]

On AMD Seattle, Xen failed to boot secondary CPU's. This patch fixes it.

As per PSCI spec, If CPU_ON entry_point_address is 64-bit then function id 
parameter should be set to SMC64 version (0xC4000003).

Signed-off-by: Brijesh Singh <brijeshkumar.singh@xxxxxxx>
---
 xen/arch/arm/psci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/arm/psci.c b/xen/arch/arm/psci.c
index 7ad6a43..117c6a9 100644
--- a/xen/arch/arm/psci.c
+++ b/xen/arch/arm/psci.c
@@ -116,7 +116,11 @@ int __init psci_init_0_2(void)
         return -EOPNOTSUPP;
     }
 
+#ifdef CONFIG_ARM_64
+    psci_cpu_on_nr = PSCI_0_2_FN64_CPU_ON;
+#else
     psci_cpu_on_nr = PSCI_0_2_FN_CPU_ON;
+#endif
 
     printk(XENLOG_INFO "Using PSCI-0.2 for SMP bringup\n");
 
-- 
1.9.1


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