From: Joel Schopp <jschopp@austin.ibm.com>
To: benh@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH] powerpc: update ibm,client-architecture
Date: Fri, 18 Dec 2009 15:07:32 -0600 [thread overview]
Message-ID: <1261170452.8134.13.camel@jschopp-laptop> (raw)
In order to boot with more than 64 cores on machines that support the ibm,client-architecture RTAS call a
new field has been added to the structure. This patch updates that field and adds a few others in the
process. It would be good if this could go in as a bugfix.
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Index: linux-2.6.git/arch/powerpc/kernel/prom_init.c
===================================================================
--- linux-2.6.git.orig/arch/powerpc/kernel/prom_init.c
+++ linux-2.6.git/arch/powerpc/kernel/prom_init.c
@@ -654,6 +654,9 @@ static void __init early_cmdline_parse(v
#define OV5_CMO 0x00
#endif
+/* Option Vector 6: IBM PAPR hints */
+#define OV6_LINUX 0x02 /* Linux is our OS */
+
/*
* The architecture vector has an array of PVR mask/value pairs,
* followed by # option vectors - 1, followed by the option vectors.
@@ -665,7 +668,7 @@ static unsigned char ibm_architecture_ve
W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */
W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */
W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */
- 5 - 1, /* 5 option vectors */
+ 6 - 1, /* 6 option vectors */
/* option vector 1: processor architectures supported */
3 - 2, /* length */
@@ -697,12 +700,26 @@ static unsigned char ibm_architecture_ve
0, /* don't halt */
/* option vector 5: PAPR/OF options */
- 5 - 2, /* length */
+ 13 - 2, /* length */
0, /* don't ignore, don't halt */
OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY |
OV5_DONATE_DEDICATE_CPU | OV5_MSI,
0,
OV5_CMO,
+ 0, /* reserved */
+ 0, /* reserved */
+ 0, /* reserved */
+ 0, /* reserved */
+ W(NR_CPUS/4), /* max cores supported */
+
+ /* option vector 6: IBM PAPR hints */
+ 4 - 2,
+ 0, /* reserved */
+ 0, /* 1 == no secondary pteg */
+ OV6_LINUX,
+
+ /* option vector 7: IBM PAPR OS identification */
+ /* a human readable ascii string will go here */
};
/* Old method - ELF header with PT_NOTE sections */
next reply other threads:[~2009-12-18 21:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-18 21:07 Joel Schopp [this message]
2009-12-20 23:59 ` [PATCH] powerpc: update ibm,client-architecture Michael Neuling
2009-12-21 18:15 ` Joel Schopp
2009-12-21 21:12 ` Michael Neuling
2009-12-21 22:14 ` Joel Schopp
2009-12-22 0:33 ` Michael Neuling
2009-12-22 0:58 ` Tony Breeds
2009-12-21 0:44 ` Tony Breeds
2009-12-21 18:22 ` Joel Schopp
2009-12-22 0:18 ` Tony Breeds
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