On Thu, 2010-01-14 at 17:01 -0600, Joel Schopp wrote: > This patch adds 2 fields to the ibm_architecture_vec array. > > The first of these fields indicates the number of cores which Linux can > boot. It does not account for SMT, so it may result in cpus assigned to > Linux which cannot be booted. A second patch follows that dynamically > updates this for SMT. > > The second field just indicates that our OS is Linux, and not another > OS. The system may or may not use this hint to performance tune > settings for Linux.
Patch submission 101... > Sorry if the last version sent out got whitespace munged. Hopefully > evolution works on this one. The above should be past the signature marker (--) so it doesn't end up in the changeset comments > Signed-off-by:Joel Schopp<jsch...@austin.ibm.com> The marker should be here or the line below: > Index: linux-2.6.git/arch/powerpc/kernel/prom_init.c > =================================================================== Would also end up in the comments. The rest looks fine. Cheers, Ben. > --- linux-2.6.git.orig/arch/powerpc/kernel/prom_init.c > +++ linux-2.6.git/arch/powerpc/kernel/prom_init.c > @@ -654,6 +656,9 @@ 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 +670,7 @@ 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 +702,24 @@ 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, > + 0, > + 0, > + 0, > + W(NR_CPUS), /* number of cores supported*/ > + > + /* option vector 6: IBM PAPR hints */ > + 4 - 2, /* length */ > + 0, > + 0, > + OV6_LINUX, > + > }; > > /* Old method - ELF header with PT_NOTE sections */ > > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
