APPLIED[J/realtime]: [SRU][J/realtime][PATCH 0/1] Fix for LP:1972899

[Andrea Righi]

On Tue, May 10, 2022 at 04:05:45PM -0400, Joseph Salisbury wrote:
> BugLink: https://bugs.launchpad.net/bugs/1972899
> 
> [SRU Justification]
> A new commit in the Jammy 5.15.0-29.30 kernel is causing a build failure
> for the real-time kernel.
> 
> After a bisect, I found this commit is causing the real-time kernel build
> failure:
> dc66c1b8a2be1 ("x86/pkru: Remove useless include")
> 
> Commit dc66c1b8a2be1 was added in 5.16-rc1 and not cc'd to stable. It was
> picked into Jammy to enable AMX support. See bug 1967750.
> 
> The following commit resolves this regression by fixing up the includes:
> 35fa745286ac4 ("x86/mm: Include spinlock_t definition in pgtable")
> 
> Commit 35fa745286ac4 was merged into mainline 5.17-rc1.
> 
> [Fix]
> 35fa745286ac4 ("x86/mm: Include spinlock_t definition in pgtable")
> 
> [Test case]
> Real-time kernel builds are now working after picking this commit.
> 
> [Regression potential]
> Low. The new commit is just including a header file.

Applied to jammy/linux-realtime.

Thanks,
-Andrea