From: Scott Wood <scottwood@freescale.com>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH v2 1/4] powerpc: Introduce local (non-broadcast) forms of tlb invalidates
Date: Wed, 3 Sep 2008 11:12:51 -0500 [thread overview]
Message-ID: <20080903161251.GA10877@loki.buserror.net> (raw)
In-Reply-To: <1220018213-12959-1-git-send-email-galak@kernel.crashing.org>
On Fri, Aug 29, 2008 at 08:56:50AM -0500, Kumar Gala wrote:
> +_GLOBAL(_tlbil_all)
> +#define MMUCSR0_TLBFI (MMUCSR0_TLB0FI | MMUCSR0_TLB1FI | \
> + MMUCSR0_TLB2FI | MMUCSR0_TLB3FI)
> + li r3,(MMUCSR0_TLBFI)@l
> + mtspr SPRN_MMUCSR0, r3
> +1:
> + mfspr r3,SPRN_MMUCSR0
> + andi. r3,r3,MMUCSR0_TLBFI@l
> + bne 1b
> + blr
> +
> +/*
> + * Flush MMU TLB for a particular process id, but only on the local processor
> + * (no broadcast)
> + */
> +_GLOBAL(_tlbil_pid)
> + li r3,(MMUCSR0_TLBFI)@l
> + mtspr SPRN_MMUCSR0, r3
> +1:
> + mfspr r3,SPRN_MMUCSR0
> + andi. r1,r2,MMUCSR0_TLBFI@l
> + bne 1b
> + blr
I'm guessing _tlbil_pid is never called, as it will clobber the stack
pointer.
Should probably just point both function names at the same implementation,
since PID-specific invalidation isn't supported on non-tlbilx cores.
-Scott
next prev parent reply other threads:[~2008-09-03 16:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-29 13:56 [PATCH v2 1/4] powerpc: Introduce local (non-broadcast) forms of tlb invalidates Kumar Gala
2008-08-29 13:56 ` [PATCH v2 2/4] powerpc: Fixes for CONFIG_PTE_64BIT for SMP support Kumar Gala
2008-08-29 13:56 ` [PATCH v2 3/4] powerpc/fsl-booke: Fixup 64-bit PTE reading " Kumar Gala
2008-08-29 13:56 ` [PATCH v2 4/4] powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 32-bit Kumar Gala
2008-08-29 15:50 ` [PATCH v2 2/4] powerpc: Fixes for CONFIG_PTE_64BIT for SMP support Becky Bruce
2008-09-03 17:54 ` Becky Bruce
2008-08-29 15:20 ` [PATCH v2 1/4] powerpc: Introduce local (non-broadcast) forms of tlb invalidates Becky Bruce
2008-09-03 16:12 ` Scott Wood [this message]
2008-09-03 18:51 ` Kumar Gala
2008-09-04 3:06 ` Benjamin Herrenschmidt
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