Re: [Minios-devel] [UNIKRAFT PATCH 0/2] Fixes for linuxu platform

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, Jul 13, 2018 at 12:42:26PM +0200, Simon Kuenzer wrote:
> Hey Wei,
> 
> thanks a lot for your patches. We are aware that linuxu is unfortunately
> broken on staging currently (which is not an excuse). The low-level platform
> APIs underwent some changes in order to support scheduling but broke the
> platforms. Although Xen and KVM is working again, linuxu is not done yet.
> 
> You can find the patch series that implements the missing pieces here:
> https://lists.xenproject.org/archives/html/minios-devel/2018-06/msg00087.html
> 
> I need to find time to apply reviewers comments on this and provide another
> version of it.
> 
> On 09.07.2018 18:16, Wei Liu wrote:
> > I haven't fixed all problems, but unfortunately I don't have time anymore.
> > 
> > The other problems when building helloworld are:
> > 
> > /local/work/unikraft/unikraft/apps/helloworld/build/libukboot.o: In 
> > function `ukplat_entry':
> > (.text+0x172): undefined reference to `ukplat_irq_init'
> > (.text+0x1b6): undefined reference to `ukplat_lcpu_enable_irq'
> > /local/work/unikraft/unikraft/apps/helloworld/build/libukdebug.o: In 
> > function `_vprintd':
> > print.c:(.text+0x137): undefined reference to `ukplat_monotonic_clock'
> > /local/work/unikraft/unikraft/apps/helloworld/build/libvfscore.o: In 
> > function `vfscore_alloc_fd':
> > (.text+0xa): undefined reference to `ukplat_lcpu_save_irqf'
> > (.text+0x49): undefined reference to `ukplat_lcpu_restore_irqf'
> > /local/work/unikraft/unikraft/apps/helloworld/build/libvfscore.o: In 
> > function `vfscore_get_file':
> > (.text+0x199): undefined reference to `ukplat_lcpu_save_irqf'
> > (.text+0x1c6): undefined reference to `ukplat_lcpu_restore_irqf'
> > collect2: error: ld returned 1 exit status
> > 
> > I have written a half-baked implementation for ukplat_monotonic_clock but 
> > then
> > discovered there is not clock_gettime in nolibc.
> 
> It will be actually implemented the opposite way round. nolibc will use the
> platform API (and maybe other libraries) (e.g., ukplat_monotonic_clock) to
> provide libc calls, like clock_gettime.

Oops of course yes. Stupid me.

In any case, I will leave fixing linuxu to you guys. :-)

Wei.

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