Re: [PATCH stable 5.4] arm64: mm: account for hotplug memory when randomizing the linear region

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

The upstream commit SHA1 provided is correct: 97d6786e0669daa5c2f2d07a057f574e849dfd3e

WARNING: Author mismatch between patch and upstream commit:
Backport author: Florian Fainelli<florian.fainelli@broadcom.com>
Commit author: Ard Biesheuvel<ardb@kernel.org>


Status in newer kernel trees:
6.12.y | Present (exact SHA1)
6.6.y | Present (exact SHA1)
6.1.y | Present (exact SHA1)
5.15.y | Present (exact SHA1)
5.10.y | Not found
5.4.y | Not found

Note: The patch differs from the upstream commit:
---
1:  97d6786e0669 ! 1:  fa6d576248a0 arm64: mm: account for hotplug memory when randomizing the linear region
    @@ Metadata
      ## Commit message ##
         arm64: mm: account for hotplug memory when randomizing the linear region
     
    +    commit 97d6786e0669daa5c2f2d07a057f574e849dfd3e upstream
    +
         As a hardening measure, we currently randomize the placement of
         physical memory inside the linear region when KASLR is in effect.
         Since the random offset at which to place the available physical
    @@ Commit message
         Cc: Robin Murphy <robin.murphy@arm.com>
         Link: https://lore.kernel.org/r/20201014081857.3288-1-ardb@kernel.org
         Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    +    Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
     
      ## arch/arm64/mm/init.c ##
     @@ arch/arm64/mm/init.c: void __init arm64_memblock_init(void)
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y        |  Success    |  Success   |