From: Paul Mackerras <paulus@samba.org>
To: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2 4/11] Update firmware_has_feature() to check architecture bits
Date: Thu, 4 Apr 2013 15:19:24 +1100 [thread overview]
Message-ID: <20130404041924.GD19443@drongo> (raw)
In-Reply-To: <51509D7E.5060101@linux.vnet.ibm.com>
On Mon, Mar 25, 2013 at 01:54:54PM -0500, Nathan Fontenot wrote:
> The firmware_has_feature() function makes it easy to check for supported
> features of the hypervisor. This patch extends the capability of the
> firmware_has_feature() function to include checking for specified bits
> in vector 5 of the architecture vector as is reported in the device tree.
>
> As part of this the #defines used for the architecture vector are
> moved to prom.h and re-defined such that the vector 5 options have the vector
> index and the feature bits encoded into them. This makes for a much
> simpler design to add bits from the architecture vector to be added to
> the checking done in firmware_has_feature().
>
> Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
The inner loop in fw_vec5_feature_init is perhaps a bit less efficient
than it could be, but I don't imagine it's going to take a noticeable
amount of time.
Paul.
next prev parent reply other threads:[~2013-04-04 4:19 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-25 18:43 [PATCH v2 0/11] NUMA CPU Reconfiguration using PRRN Nathan Fontenot
2013-03-25 18:51 ` [PATCH v2 1/11] Expose pseries devicetree_update() Nathan Fontenot
2013-04-04 3:09 ` Paul Mackerras
2013-03-25 18:52 ` [PATCH v2 2/11] Add PRRN Event Handler Nathan Fontenot
2013-04-04 3:34 ` Paul Mackerras
2013-04-04 7:16 ` Benjamin Herrenschmidt
2013-04-05 15:43 ` Nathan Fontenot
2013-04-10 8:30 ` Michael Ellerman
2013-04-15 20:12 ` Nathan Fontenot
2013-03-25 18:53 ` [PATCH v2 3/11] Move architecture vector definitions to prom.h Nathan Fontenot
2013-03-25 18:54 ` [PATCH v2 4/11] Update firmware_has_feature() to check architecture bits Nathan Fontenot
2013-04-04 4:19 ` Paul Mackerras [this message]
2013-03-25 18:56 ` [PATCH v2 5/11] Update numa.c to use updated firmware_has_feature() Nathan Fontenot
2013-04-04 4:20 ` Paul Mackerras
2013-03-25 18:57 ` [PATCH v2 6/11] Update CPU Maps Nathan Fontenot
2013-04-04 4:42 ` Paul Mackerras
2013-04-05 18:02 ` Nathan Fontenot
2013-03-25 18:58 ` [PATCH v2 7/11] Use stop machine to update cpu maps Nathan Fontenot
2013-04-04 4:46 ` Paul Mackerras
2013-04-05 18:22 ` Nathan Fontenot
2013-04-23 0:23 ` Benjamin Herrenschmidt
2013-03-25 18:59 ` [PATCH v2 8/11] Update numa cpu vdso info Nathan Fontenot
2013-03-25 19:00 ` [PATCH v2 9/11] Re-enable Virtual Private Home Node capabilities Nathan Fontenot
2013-03-25 19:01 ` [PATCH v2 10/11] Enable PRRN Nathan Fontenot
2013-03-25 19:02 ` [PATCH v2 11/11] Add /proc interface to control topology updates Nathan Fontenot
2013-04-10 6:59 ` Michael Ellerman
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