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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 0/7] Optionally add libvchan to stubdom
On 26.04.2013 16:55, George Dunlap wrote: > On Fri, Apr 26, 2013 at 3:45 PM, Marek Marczykowski > <marmarek@xxxxxxxxxxxxxxxxxxxxxx> wrote: >> This patch series enhances stubdomain with libvchan. It is disabled by >> default, >> but can be easily enabled in mini-os.cfg when needed. >> In order to do so, some parts of minios needs to be extended: >> - xenstore (to support transactions) >> - libxc - to support xc_gntshr >> >> This series assumes "libxc: fix xc_gntshr_munmap" already applied. >> >> One unsolved problem is implementation of xc_gntshr_share_page_notify. On >> Linux, >> there is kernel, which can notify remote in case of server process death. In >> stubdom there is no such place - if exit() is called anywhere, the whole >> stubdom is terminated. Also the common case is stubdom destruction (the case >> for ioemu stubdom - it is destroyed by toolstack at domain shutdown), I don't >> know if stubdom even support clean shutdown. >> Anyway I can implement some notification (which needs some additional info >> stored by minios version of gnttab), just for clean libxenvchan_close(). But >> it >> is rather rare case. >> Some workaround can be checking for domain state at client side, but IMHO it >> isn't the best way (although still used in original Qubes OS vchan version). >> Any ideas? >> >> Patch 2 is independent - should be also useful for normal Linux case. > > I assume your targeting this for 4.4? Probably yes, I assume it is too late for 4.3, right? -- Best Regards / Pozdrawiam, Marek Marczykowski Invisible Things Lab Attachment:
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