> -----Original Message----- > From: Suzuki K Poulose [mailto:suzuki.poul...@arm.com] > Sent: Tuesday, April 26, 2016 5:21 PM > To: Zengtao (B); Catalin Marinas > Cc: will.dea...@arm.com; mark.rutl...@arm.com; yang....@linaro.org; > linux-kernel@vger.kernel.org; james.mo...@arm.com; > linux-arm-ker...@lists.infradead.org > Subject: Re: [PATCH] arm64: fix /proc/cpuinfo for elf32 > > 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. >
Any plan to place the personality syscall in libc? It is not nessary for each 32-bit process to do the personality syscall or linux32 command. > Suzuki > >
