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[PULL,07/29] spapr: Add ibm, purr property on power7 and newer

Message ID 1382736474-32128-8-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf Oct. 25, 2013, 9:27 p.m. UTC 
From: Alexey Kardashevskiy <aik@ozlabs.ru>

PAPR+ says that no "ibm,purr" tells the guest that H_PURR is not
supported. However some guests still try calling H_PURR on POWER7 unless
the property is present and equal to 0. This adds the property for CPUs
supporting the PURR special register.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
 hw/ppc/spapr.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 6322c98..259df92 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -422,6 +422,10 @@  static void *spapr_create_fdt_skel(const char *cpu_model,
         _FDT((fdt_property(fdt, "ibm,ppc-interrupt-gserver#s",
                            gservers_prop, sizeof(gservers_prop))));
 
+        if (env->spr_cb[SPR_PURR].oea_read) {
+            _FDT((fdt_property(fdt, "ibm,purr", NULL, 0)));
+        }
+
         if (env->mmu_model & POWERPC_MMU_1TSEG) {
             _FDT((fdt_property(fdt, "ibm,processor-segment-sizes",
                                segs, sizeof(segs))));