Hi, Sudip On 01/04/2016 09:14 PM, Sudip Mukherjee wrote: > On Sat, Jan 02, 2016 at 11:40:51PM +0100, Arnd Bergmann wrote: >> On Saturday 02 January 2016 11:59:29 Sudip Mukherjee wrote: >>>> >>>> Just to be sure we are talking about the same thing: you mean running a >>>> 64-bit >>>> kernel in a kvm guest with a 32-bit file system, right? Running a 32-bit >>>> kvm guest on a 64-bit host would not be interesting of course. >>> >>> The kvm (actually qemu, started from virt-manager with -enable-kvm) that >>> I just configured shows the following: >>> >>> lscpu shows: >>> >>> Architecture: i686 >>> CPU op-mode(s): 32-bit, 64-bit >>> Byte Order: Little Endian >>> CPU(s): 1 >>> On-line CPU(s) list: 0 >>> Thread(s) per core: 1 >>> Core(s) per socket: 1 >>> Socket(s): 1 >>> Vendor ID: GenuineIntel >>> CPU family: 6 >>> Model: 6 >>> Stepping: 3 >>> CPU MHz: 2993.200 >>> BogoMIPS: 5986.40 >>> Virtualization: VT-x >>> Hypervisor vendor: KVM >>> Virtualization type: full >>> L1d cache: 32K >>> L1i cache: 32K >>> L2 cache: 4096K >>> >>> uname -i shows: >>> i686 >>> >>> >>> Will it be ok to test in this one? >> >> >> If 'uname -i' reports i686, that usually means you have configured the >> kernel for 32-bit. Try rebuilding the kernel with 'CONFIG_64BIT' and >> 'CONFIG_IA32_EMULATION' enabled to test that the 32-bit user space now >> also works under a 64-bit kernel. > > done... tested with CONFIG_64BIT and CONFIG_IA32_EMULATION. The original > ppdev code failed with my userspace test code. After applying patch 1/2 > of v3 it still failed, but after applying 2/2 of v3 it worked. > will you take v3 through your y2038 tree? or I can keep them for, > ummmmm, 4.6 merge window. > >> >> That reminds me, we should now remove the code from fs/compat_ioctl.c >> that was handling emulating the other ioctl commands, the new .compat_ioctl >> callback in ppdev takes care of that along with the PPGETTIME/PPSETTIME >> calls, see below > > Bamvor, care to send a patch for these also... Sure. Should I send this patch with previous two patches in v4 or send this single patch to Alexander Viro and linux-fsde...@vger.kernel.org?
Regards Bamvor > > regards > sudip > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
