On Thu, Nov 13, 2014 at 12:05:34AM -0600, Steven J. Hill wrote:
> From: Leonid Yegoshin <Leonid.Yegoshin@xxxxxxxxxx>
>
> This patch refactors commit 464fd83e841a16f4ea1325b33eb08170ef5cd1f4
> (MIPS: Limit fixrange_init() to the FIXMAP region) and correctly
> calculates the right length while taking into account page table
> alignment by PMD.
In that commit Kevin wrote:
MIPS: Limit fixrange_init() to the FIXMAP region
fixrange_init() allocates page tables for all addresses higher than
FIXADDR_TOP. On processors that override the default FIXADDR_TOP
address of 0xfffe_0000, this can consume up to 4 pages (1 page per 4MB)
for pgd's that are never used.
And that's all also reintroduced. Think of bx 63xx which defines FIXADDR_TOP
as 0xff000000. Blindly rounding up to 0 for the end address doesn't cut it.
Ralf
