> On Sep 21, 2021, at 7:50 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > On Tue, Sep 21, 2021 at 07:02:51PM +0800, sxwjean@xxxxxx wrote: >> From: Xiongwei Song <sxwjean@xxxxxxxxx> >> >> In arm64 or powerpc or sparc, the 32 bits process in 64 bits kernel is set >> flag TIF_32BIT. However in x86, that flag name is TIF_ADDR32. This patch >> makes the flag name in x86 same as other archs. > > x86 is fundamentally different here, the TIF flag does not say (nor can > it) anything about the bitness of the code running. On x86_64 a 64bit > process can run 32bit code without the kernel necessarily knowing > anything about it. > > The only thing it does it limit the address range, and as such the name > is correct. > Hi Peter, Thanks for your comments. But I missed email addresses for patch 1 and 2. I will resend the patches. Regards, Xiongwei
