powerpc/pseries: Support lower minimum entitlement for virtual processors
This patch changes the architecture vector to advertise support for a
lower minimum virtual processor entitled capacity. The default
minimum without this patch is 10%, this patch specifies 1%.
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 9986027..2acf54a 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -680,6 +680,9 @@
#define OV3_VMX 0x40 /* VMX/Altivec */
#define OV3_DFP 0x20 /* decimal FP */
+/* Option vector 4: IBM PAPR implementation */
+#define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */
+
/* Option vector 5: PAPR/OF options supported */
#define OV5_LPAR 0x80 /* logical partitioning supported */
#define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */
@@ -744,8 +747,9 @@
OV3_FP | OV3_VMX | OV3_DFP,
/* option vector 4: IBM PAPR implementation */
- 2 - 2, /* length */
+ 3 - 2, /* length */
0, /* don't halt */
+ OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */
/* option vector 5: PAPR/OF options */
13 - 2, /* length */
@@ -762,7 +766,7 @@
* must match by the macro below. Update the definition if
* the structure layout changes.
*/
-#define IBM_ARCH_VEC_NRCORES_OFFSET 100
+#define IBM_ARCH_VEC_NRCORES_OFFSET 101
W(NR_CPUS), /* number of cores supported */
/* option vector 6: IBM PAPR hints */