On 12/28/18 at 11:00am, Pingfan Liu wrote:
> The bottom-up allocation style is introduced to cope with movable_node,
> where the limit inferior of allocation starts from kernel's end, due to
> lack of knowledge of memory hotplug info at this early time.
> Beside this original aim, 'kexec -c' prefers to reuse this style to alloc mem
Wondering what is 'kexec -c'.
> at lower address, since if the reserved region is beyond 4G, then it requires
> extra mem (default is 16M) for swiotlb. But at this time hotplug info has been
The default is 256M, not sure if we are talking about the same thing.
low_size = max(swiotlb_size_or_default() + (8UL << 20), 256UL << 20);
> got, the limit inferior can be extend to 0, which is done by this series
>
> Cc: Tang Chen
> Cc: "Rafael J. Wysocki"
> Cc: Len Brown
> Cc: Andrew Morton
> Cc: Mike Rapoport
> Cc: Michal Hocko
> Cc: Jonathan Corbet
> Cc: Yaowei Bai
> Cc: Pavel Tatashin
> Cc: Nicholas Piggin
> Cc: Naoya Horiguchi
> Cc: Daniel Vacek
> Cc: Mathieu Malaterre
> Cc: Stefan Agner
> Cc: Dave Young
> Cc: Baoquan He
> Cc: ying...@kernel.org,
> Cc: vgo...@redhat.com
> Cc: linux-kernel@vger.kernel.org
>
> Pingfan Liu (2):
> mm/memblock: extend the limit inferior of bottom-up after parsing
> hotplug attr
> x86/kdump: bugfix, make the behavior of crashkernel=X consistent with
> kaslr
>
> arch/x86/kernel/setup.c | 9 +---
> drivers/acpi/numa.c | 4
> include/linux/memblock.h | 1 +
> mm/memblock.c| 58
> +---
> 4 files changed, 46 insertions(+), 26 deletions(-)
>
> --
> 2.7.4
>
