Mikulas Patocka writes: > > > On Fri, 24 Jan 2014, Mikael Pettersson wrote: > > > Mikulas Patocka writes: > > > Hi > > > > > > Here I'm sending some ia64 patches to make it work in the ski emulator. > > > This has been broken for a long time. > > > > Thanks. I've recently started running 3.x kernels on ia64 via ski, > > but I'm getting random kernel crashes with 3.13. I'll give your > > patches a try shortly. > > I also had some random page-table corruption when running recent kernels > in ski. The problems occured when upgrading the whole Debian distribution. > Kernel 2.6.8 was solid, new kernels caused problems, I don't know why.
What I've seen so far seems to indicate that gcc-4.8.2 miscompiles ski, resulting in kernel oopses, and _possibly_ that gcc-4.7.3 miscompiles the kernel. Ski compiled by gcc-4.7.3 (on x86_64) running a kernel compiled by gcc-4.3.6 seems to be a solid combination for me. > > I've written a few patches to improve other aspects of running the > > kernel on ski: > > - ski patch to use tun/tap networking (no need to run ski as root) > > - ski patch to implement a fixed-frequency ITC (the ITC is currently > > highly variable, completely breaking basic timekeeping) > > - kernel patch to turn PAL_HALT_LIGHT into a new SSC_HALT_LIGHT, > > and a corresponing ski patch to pause() on SSC_HALT_LIGHT; this > > together with the fixed-frequency ITC patch allows ski to idle > > with very low host CPU overhead when the guest kernel idles > > - kernel patch to bump the RAM size from 130MB to 2GB > > > > I'd be happy to share these patches if there's interest in them. > > > > /Mikael > > I would be interested in them. I also patched that timekeeping issue in > ski. My ski patches are in <http://user.it.uu.se/~mikpe/linux/patches/ia64/ski-1.3.2/> for now. I'll post the kernel patches to linux-ia64 @ vger in a few minutes. /Mikael -- 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/