All of lore.kernel.org
 help / color / mirror / Atom feed
From: Will Schmidt <will_schmidt@vnet.ibm.com>
To: Jake Moilanen <moilanen@austin.ibm.com>
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] CAS DFP support
Date: Wed, 22 Nov 2006 12:36:59 -0600	[thread overview]
Message-ID: <1164220619.8536.9.camel@localhost> (raw)
In-Reply-To: <1164208814.1954.372.camel@goblue>

On Wed, 2006-22-11 at 09:20 -0600, Jake Moilanen wrote:
> When booting a Power6 in compat mode, the DFP bit must be set in the
> client architecture call, or else firmware will downgrade the compliance
> to P5 compat mode, thus removing VMX and DFP instructions.
> 
> Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>

Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com>

> 
> --- 2.6/arch/powerpc/kernel/prom_init.c~	2006-11-13 15:01:13.000000000
> -0600
> +++ 2.6/arch/powerpc/kernel/prom_init.c	2006-11-21 18:38:27.000000000
> -0600
> @@ -627,6 +627,7 @@ static void __init early_cmdline_parse(v
>  /* Option vector 3: processor options supported */
>  #define OV3_FP			0x80	/* floating point */
>  #define OV3_VMX			0x40	/* VMX/Altivec */
> +#define OV3_DFP			0x20	/* decimal floating point */
> 
>  /* Option vector 5: PAPR/OF options supported */
>  #define OV5_LPAR		0x80	/* logical partitioning supported */
> @@ -674,7 +675,7 @@ static unsigned char ibm_architecture_ve
>  	/* option vector 3: processor options supported */
>  	3 - 2,				/* length */
>  	0,				/* don't ignore, don't halt */
> -	OV3_FP | OV3_VMX,
> +	OV3_FP | OV3_VMX | OV3_DFP,
> 
>  	/* option vector 4: IBM PAPR implementation */
>  	2 - 2,				/* length */
> 
> 
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev

  parent reply	other threads:[~2006-11-22 18:37 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-22 15:20 [PATCH] CAS DFP support Jake Moilanen
2006-11-22 15:25 ` Kumar Gala
2006-11-22 15:46 ` Kumar Gala
2006-11-22 15:58   ` Jake Moilanen
2006-11-22 16:06   ` Peter Bergner
2006-11-22 16:41     ` Kumar Gala
2006-11-22 18:36       ` Will Schmidt
2006-11-22 18:51         ` Kumar Gala
2006-11-23 14:39       ` Segher Boessenkool
2006-11-22 21:48   ` Paul Mackerras
2006-11-22 18:36 ` Will Schmidt [this message]
2006-11-22 21:45 ` Paul Mackerras

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1164220619.8536.9.camel@localhost \
    --to=will_schmidt@vnet.ibm.com \
    --cc=linuxppc-dev@ozlabs.org \
    --cc=moilanen@austin.ibm.com \
    --cc=paulus@samba.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.