[CRIU] [RFC 2/3] Use run-time page_size() for mremap

[Cyrill Gorcunov]

On Thu, Jul 23, 2015 at 07:59:49AM -0400, Christopher Covington wrote:
> The old and new address parameters passed to the mremap system
> call must be page size aligned. On AArch64, the page size can
> only be correctly determined at run time. This fixes the following
> errors for CRIU on AArch64 kernels with CONFIG_ARM64_64K_PAGES=y.
> 
>       call mremap(0x3ffb7d50000, 8192, 8192, MAYMOVE | FIXED, 0x2a000)
>   Error (rst-malloc.c:201): Can't mremap rst mem: Invalid argument
> 
>       call mremap(0x3ffb7d90000, 8192, 8192, MAYMOVE | FIXED, 0x32000)
>   Error (rst-malloc.c:201): Can't mremap rst mem: Invalid argument
> 
> Signed-off-by: Christopher Covington <cov at codeaurora.org>
Acked-by: Cyrill Gorcunov <gorcunov at openvz.org>