ACK: [SRU][focal:gcp/jammy:gcp/noble:gcp][PATCH 0/1] Expose and use the end of the physical memory address space

[John Cabaj]

On 9/24/24 6:29 AM, Magali Lemes wrote:
> BugLink: https://bugs.launchpad.net/bugs/2080563
> 
> [Impact]
> Request from Google to backport "x86/kaslr: Expose and use the end of the
> physical memory address space" to address intermittent CUDA hangs.
> 
> [Fix]
> Focal: backport
> Jammy: backport
> Noble: clean cherry-pick
> 
> [Test]
> Compile and boot tested.
> 
> [Where problems could occur]
> The fix directly affects memory management in x86 systems, specifically
> when KASLR is enabled.
> 
> [Other info]
> #SF 00395854
> 
> Thomas Gleixner (1):
>    x86/kaslr: Expose and use the end of the physical memory address space
> 
>   arch/x86/include/asm/page_64.h          |  1 +
>   arch/x86/include/asm/pgtable_64_types.h |  4 ++++
>   arch/x86/mm/init_64.c                   |  4 ++++
>   arch/x86/mm/kaslr.c                     | 32 ++++++++++++++++++++-----
>   include/linux/mm.h                      |  4 ++++
>   kernel/resource.c                       |  6 ++---
>   mm/memory_hotplug.c                     |  2 +-
>   mm/sparse.c                             |  2 +-
>   8 files changed, 43 insertions(+), 12 deletions(-)
> 

Acked-by: John Cabaj <john.cabaj at canonical.com>