On 24/01/19 03:00, Yang Zhong wrote: > On Thu, Jan 24, 2019 at 02:09:25AM +0100, Paolo Bonzini wrote: >> On 23/01/19 07:55, Yang Zhong wrote: >>> This Kconfig implementation is rebased from Paolo's branch >>> https://github.com/bonzini/qemu/commits/kconfig >>> >>> I rebased most of patches except non-x86 ARCHs dependency definitions >>> this time. >>> https://github.com/yangzhon/qemu/commits/topic/upstream/Kconfig >>> >>> The current RFC patches only support >>> (*) x86_64 platform build >>> Once design is fixed, we can do other archs. >>> >>> (*) defconfig >>> "randconfig" build has some issues, which are mostly related >>> with CONFIG* in Kconfig.host abd configure. In randconfig mode, >>> some CONFIG* has different setting value in config-host.mak and >>> %/config-device.mak, which make QEMU build failure. >>> >>> (*) Kconfig in hw/ directory >>> >>> The current configure and build command are same with previous >>> commands and if we want to disable or enable some features, like >>> "tcg", we still need add "--enable/--disable-tcg" in configure >>> command line. If we want to disable one emulation device, we can >>> disable this in related Kconfig file in hw/ directory. >>> >>> The current build command: >>> (*) ./configure --target-list=x86_64-softmmu >>> (*) make -j8 >>> >>> Since the Kconfig language replace traditional CONFIG_* in >>> default-config/%-softmmu.mak, the %-softmmu.mak file only >>> define embeded boards or machines, like 440fx and Q35 in x86_64 >>> platform. The Kconfig has already defined dependency topology >>> between different Kconfig files, but there are still some issues >>> >>> (*) Kconfig for configure(config-host.mak) >>> Some CONFIG* in configure need some logic to generate, those >>> are hard to input this CONFIG* in Kconfig.host or Kconfig* file. >>> >>> (*) Kconfig for %config-target.mak >>> The CONFIG* in %/config-target.mak file, this is still related >>> with configure. >>> >>> (*) randconfig support issue. >>> >>> Before this RFC patches, we have talked Kconfig in another thread >>> http://lists.nongnu.org/archive/html/qemu-devel/2018-09/msg02827.html >>> >>> Please give your comments on this RFC thread, many thanks! >> >> I started looking at this, and found two bugs in current code >> (unreachable devices that shouldn't be there - SERIAL_ISA for ARM, >> ACPI_NVDIMM for MIPS). There are a few issues in that the script is not >> Python 3-enabled and only x86 compiles, but they are easily fixed. A >> slightly bigger thing is to make VFIO configuration more fine-grained >> and express it with kconfig dependencies, but it's just a couple patches >> in the same spirit as these ones. I'll look at randconfig next. >> > Yes, thanks Paolo. The v4 patches have gotten new comments from other > maintainers, and i will send v5 patches in next week.
Ok, I'll pass you offlist a tree to use as a base for v5. Paolo