Subject: [PATCH] arm64: fix /proc/cpuinfo for elf32

From: [email-masked] (Suzuki K Poulose)
Date: Tue, 26 Apr 2016 10:20:51 +0100

On 26/04/16 03:21, Zengtao (B) wrote:
>
> So you mean the 64-bit grep should see the same cpuinfo as its father process
> which is 32-bit?
>
> For 32-bit process running on 64-bit kernel, we have to explicitly call the personality
> syscall to get the right cpuinfo, but how to deal with the old 32-bit binaries?

Yes, you could use the syscall to switch the personality. Alternately, you could run
"linux32" command to switch the personality to PER_LINUX32 and then execute
64/32 bit applications.

Suzuki