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Commit 404e32e4 authored by Robert Jennings's avatar Robert Jennings Committed by Benjamin Herrenschmidt
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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: default avatarRobert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8b6ee040

arch/powerpc/kernel/prom_init.c

+6 −2
Original line number Diff line number Diff line
@@ -680,6 +680,9 @@ static void __init early_cmdline_parse(void) 
#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 @@ static unsigned char ibm_architecture_vec[] = { 
	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 @@ static unsigned char ibm_architecture_vec[] = { 
	 * 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 */