On 10/10/2019 13:29, Greg KH wrote:
On Thu, Oct 10, 2019 at 12:12:01PM +0100, Suzuki K Poulose wrote:
All,
On 10/10/2019 12:08, Suzuki K Poulose wrote:
A signed feature value is truncated to turn to an unsigned value
causing bad state in the system wide infrastructure. This affects
the discovery of FP/ASIMD support on arm64. Fix this by making sure
we cast it properly.
Fixes: 4f0a606bce5ec ("arm64: cpufeature: Track unsigned fields")
Cc: stable@xxxxxxxxxxxxxxx # v4.4
Please note that this patch is only applicable for stable 4.4 tree.
I should have removed the Fixes tag.
Why is it only for 4.4? That needs to be documented really really
This was fixed later in v4.6 onwards with commit 28c5dcb22f90113dea
("arm64: Rename cpuid_feature field extract routines") rather inadvertently.
really well in the changelog as to why this is a one-off patch, and why
we can't just take the relevant patches that are in Linus's tree
instead.
Please fix up and resend.
I can resend the patch with the above information included if you like.
Cheers
Suzuki
