On Wed, Sep 23, 2015 at 09:34:16AM -0600, Jan Beulich wrote: > Us extending the GDT limit past the Xen descriptors so far meant that > guests (including user mode programs) accessing any descriptor table > slot above the original OS'es limit but below the first Xen descriptor > caused a #PF, converted to a #GP in our #PF handler. Which is quite > different from the native behavior, where some of such accesses (LAR > and LSL) don't fault. Mimic that behavior by mapping a blank page into > unused slots. > > While not strictly required, treat the LDT the same for consistency. > > Reported-by: Andrew Cooper <andrew.coop...@citrix.com> > Signed-off-by: Jan Beulich <jbeul...@suse.com> > --- > Not sure about 4.6 here: Beyond Andrew noticing I don't think anyone > ran into this issue in a real world environment, and hence it doesn't > seem to be too critical to get this fixed. >
Given that this is not absolutely essential (fix critical bug or regressions) I would like it to go in after 4.6. Wei. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
