On Mon, Dec 10, 2012 at 05:11:35PM +0800, Xiao Guangrong wrote: > Changelog: > There are some changes from Marcelo and Gleb's review, thank you all! > - access indirect_shadow_pages in the protection of mmu-lock > - fix the issue when unhandleable instruction access on large page > - add a new test case for large page > > The current reexecute_instruction can not well detect the failed instruction > emulation. It allows guest to retry all the instructions except it accesses > on error pfn. > > For example, these cases can not be detected: > - for tdp used > currently, it refused to retry all instructions. If nested npt is used, the > emulation may be caused by shadow page, it can be fixed by unshadow the > shadow page. > > - for shadow mmu > some cases are nested-write-protect, for example, if the page we want to > write is used as PDE but it chains to itself. Under this case, we should > stop the emulation and report the case to userspace. > > There are two test cases based on kvm-unit-test can trigger a infinite loop on > current code (ept = 0), after this patchset, it can report the error to Qemu. > > Subject: [PATCH] access test: test unhandleable instruction > > Test the instruction which can not be handled by kvm > > Signed-off-by: Xiao Guangrong <xiaoguangr...@linux.vnet.ibm.com>
Please submit the test for inclusion. There should be some way to make it fail.. program a timer interrupt and #GP? -- 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/
