[PATCHv2] arm: fix pmd flushing in map_init_section

[Catalin Marinas]

On Fri, Jun 14, 2013 at 05:57:24PM +0100, Mark Rutland wrote:
> In e651eab0af: "ARM: 7677/1: LPAE: Fix mapping in alloc_init_section for
> unaligned addresses", the pmd flushing was broken when split out to
> map_init_section. At the end of the final iteration of the while loop,
> pmd will point at the pmd_t immediately after the pmds we updated, and
> thus flush_pmd_entry(pmd) won't flush the newly modified pmds. This has
> been observed to prevent an 11MPCore system from booting.
> 
> This patch fixes this by remembering the address of the first pmd we
> update and using this as the argument to flush_pmd_entry.
> 
> Signed-off-by: Mark Rutland <mark.rutland at arm.com>
> Cc: R Sricharan <r.sricharan at ti.com>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Christoffer Dall <cdall at cs.columbia.edu>
> Cc: Russell King <rmk+kernel at arm.linux.org.uk>
> Cc: stable at vger.kernel.org

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>