From: Ralf Baechle <ralf@linux-mips.org>
To: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Subject: Re: [PATCH UPDATED 3/4] MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT
Date: Thu, 20 Jun 2013 17:19:49 +0200 [thread overview]
Message-ID: <20130620151949.GA337@linux-mips.org> (raw)
In-Reply-To: <1371559516-4862-1-git-send-email-jchandra@broadcom.com>
On Tue, Jun 18, 2013 at 06:15:15PM +0530, Jayachandran C wrote:
> Allow usage of scratch register for current pgd even when
> MIPS_PGD_C0_CONTEXT is not configured. MIPS_PGD_C0_CONTEXT is set
> for 64r2 platforms to indicate availability of Xcontext for saving
> cpuid, thus freeing Context to be used for saving PGD. This option
> was also tied to using a scratch register for storing PGD.
>
> This commit will allow usage of scratch register to store the current
> pgd if one can be allocated for the platform, even when
> MIPS_PGD_C0_CONTEXT is not set. The cpuid will be kept in the CP0
> Context register in this case.
>
> The code to store the current pgd for the TLB miss handler is now
> generated in all cases. When scratch register is available, the PGD
> is also stored in the scratch register.
I also pulled this one again as it was causing to others.
Ralf
next prev parent reply other threads:[~2013-06-20 15:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-11 15:41 [PATCH 0/4] Use scratch registers on XLR/XLS/XLP Jayachandran C
2013-06-11 15:41 ` [PATCH 1/4] MIPS: Allow platform specific scratch registers Jayachandran C
2013-06-11 15:41 ` [PATCH 2/4] MIPS: Fixup check for invalid scratch register Jayachandran C
2013-06-11 15:41 ` [PATCH 3/4] MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT Jayachandran C
2013-06-18 12:45 ` [PATCH UPDATED " Jayachandran C
2013-06-18 12:45 ` [PATCH UPDATED 4/4] MIPS: Move definition of SMP processor id register to header file Jayachandran C
2013-06-20 14:48 ` Ralf Baechle
2013-06-20 15:40 ` Maciej W. Rozycki
2013-06-20 15:19 ` Ralf Baechle [this message]
2013-06-11 15:41 ` [PATCH " Jayachandran C
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