Messages in this thread | | | Date | Sat, 4 Dec 2021 15:57:06 +0100 | Subject | Re: [PATCH AUTOSEL 4.4 4/9] parisc: Provide an extru_safe() macro to extract unsigned bits | From | Helge Deller <> |
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On 12/4/21 13:15, Pavel Machek wrote: > Hi! > >> From: Helge Deller <deller@gmx.de> >> >> [ Upstream commit 169d1a4a2adb2c246396c56aa2f9eec3868546f1 ] >> >> The extru instruction leaves the most significant 32 bits of the >> target register in an undefined state on PA 2.0 systems. >> Provide a macro to safely use extru on 32- and 64-bit machines. > > As the macro is not used by subsequent 4.4 patches,
That's basically true, but in case we backport some patches later on, it's handy if it's already in.
> I don't believe this is suitable for -stable.
Please note that I didn't added a backport-request in my original commit. I'm fine with any decision if it's either dropped or kept.
Helge
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