svn commit: r266565 - head/sys/arm/arm

Ian Lepore ian at FreeBSD.org
Sun May 25 14:01:52 UTC 2014


On Fri, 2014-05-23 at 09:12 -0400, John Baldwin wrote:
> On Thursday, May 22, 2014 7:38:17 pm Ian Lepore wrote:
> > Author: ian
> > Date: Thu May 22 23:38:17 2014
> > New Revision: 266565
> > URL: http://svnweb.freebsd.org/changeset/base/266565
> > 
> > Log:
> >   Map device memory using PTE_DEVICE attributes, and also ensure that the
> >   shared flag is set on normal-memory mappings made via pmap_kenter() for SMP.
> >   
> >   The "shared flag" part of this change isn't obvious from the diff, here's
> >   the deal... by using the array of preformatted page table entry templates
> >   instead of constructing the PTE from scratch, we automatically get the
> >   right attribute bits set for both caching and shared.
> >   
> >   MFC after:	1 week
> 
> One tiny nit:
> 
> > Modified: head/sys/arm/arm/pmap-v6.c
> > ==============================================================================
> > --- head/sys/arm/arm/pmap-v6.c	Thu May 22 23:18:17 2014	(r266564)
> > +++ head/sys/arm/arm/pmap-v6.c	Thu May 22 23:38:17 2014	(r266565)
> > @@ -2401,12 +2402,17 @@ pmap_kenter_internal(vm_offset_t va, vm_
> >  	ptep = &l2b->l2b_kva[l2pte_index(va)];
> >  	opte = *ptep;
> >  
> > +	if (flags & KENTER_CACHE)
> > +		*ptep = L2_S_PROTO | l2s_mem_types[PTE_CACHE] | pa | L2_S_REF;
> > +	else if (flags & KENTER_DEVICE)
> > +		*ptep = L2_S_PROTO |l2s_mem_types[PTE_DEVICE] | pa | L2_S_REF;
> > +	else
> > +		*ptep =L2_S_PROTO | l2s_mem_types[PTE_NOCACHE] | pa | L2_S_REF;
> > +
> 
> The whitespace around operators for the last two assignments is inconsistent.
> 

Fixed, thanks.

-- Ian




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