Christophe Leroy <christophe.le...@csgroup.eu> writes: > As reported by Carlo, 16Mbytes is not enough with modern kernels > that tend to be a bit big, so map another 16M page at boot.
I guess we're not expecting systems with less than 32MB, so making it unconditional is OK? cheers > diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S > index 7d72ee5ab387..5fce4680d2d3 100644 > --- a/arch/powerpc/kernel/head_40x.S > +++ b/arch/powerpc/kernel/head_40x.S > @@ -650,7 +650,7 @@ start_here: > b . /* prevent prefetch past rfi */ > > /* Set up the initial MMU state so we can do the first level of > - * kernel initialization. This maps the first 16 MBytes of memory 1:1 > + * kernel initialization. This maps the first 32 MBytes of memory 1:1 > * virtual to physical and more importantly sets the cache mode. > */ > initial_mmu: > @@ -687,6 +687,12 @@ initial_mmu: > tlbwe r4,r0,TLB_DATA /* Load the data portion of the entry */ > tlbwe r3,r0,TLB_TAG /* Load the tag portion of the entry */ > > + li r0,62 /* TLB slot 62 */ > + addis r4,r4,SZ_16M > + addis r3,r3,SZ_16M > + tlbwe r4,r0,TLB_DATA /* Load the data portion of the entry */ > + tlbwe r3,r0,TLB_TAG /* Load the tag portion of the entry */ > + > isync > > /* Establish the exception vector base > -- > 2.31.1
