On 29/04/2019 07.09, Li Qiang wrote: > > > Li Qiang <liq...@gmail.com <mailto:liq...@gmail.com>> 于2019年4月25日周 > 四 下午10:29写道： > > > > Thomas Huth <th...@redhat.com <mailto:th...@redhat.com>> 于2019年4月 > 25日周四 下午5:57写道： > > On 24/04/2019 16.06, Li Qiang wrote: > > In the disscuss of adding reboot timeout test case: > > > https://lists.gnu.org/archive/html/qemu-devel/2019-04/msg03304.html > > > > Philippe suggested we should uses the only related option for one > > specific test. However currently we uses one QTestState for > all the > > test cases. In order to achieve Philippe's idea, I split the > test case > > for its own QTestState. As this patchset has changed a lot, I > don't bump > > the version. > > > > Change since v1: > > Add a patch to store the reboot_timeout as little endian > > Fix the endian issue per Thomas's review > > The test still aborts on a big endian host: > > $ QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 > tests/fw_cfg-test > /x86_64/fw_cfg/signature: OK > /x86_64/fw_cfg/id: OK > /x86_64/fw_cfg/uuid: OK > /x86_64/fw_cfg/ram_size: OK > /x86_64/fw_cfg/nographic: OK > /x86_64/fw_cfg/nb_cpus: OK > /x86_64/fw_cfg/max_cpus: OK > /x86_64/fw_cfg/numa: OK > /x86_64/fw_cfg/boot_menu: OK > /x86_64/fw_cfg/reboot_timeout: ** > > ERROR:/home/thuth/devel/qemu/tests/fw_cfg-test.c:190:test_fw_cfg_reboot_timeout: > assertion failed (reboot_timeout == 15): (251658240 == 15) > Aborted > > 251658240 is 0x0F000000, i.e. a byte-swapped 0xf = 15 ... i.e. > you still > got an endianess issue somewhere in the code. > > > > Hmmmm, > > I have thought a long time, still can't point where is wrong. > > Let's from the result: > 0x0f000000 in the big endian laid as this: > low ---> high > 0x0f 00 00 00 > > As I have swapped before the compare so it is read as this: > low ---> high > 00 00 00 0x0f > > However from the store side: > the 15 in big endian is: > low ---> high > 00 00 00 0x0f > > But Before I store it, I convert it to little endian, so following > should be stored: > low ---> high > 0x0f 00 00 00 > > Do you apply the patch 3 and recompile the qemu binary? > > > > Hello Thomas, > I have tested again this and just store it as big endian(so that the > store/load has different endianness), > I don't see any error.
Uh, now this is embarrassing... I just tried again to see whether I could find the issue, but now the test passes without problems! I guess I simply only did a "make tests/fw_cfg-test" before and forgot to recompile qemu itself. Big sorry for this! Anyway, patch series works fine for me, so for the series: Tested-by: Thomas Huth <th...@redhat.com> > Also, can we add these test sceneries(big-endian host) in our CI? so > that the bot can report for every commit. Patchew only runs on x86, but Peter has some big endian hosts for his acceptance tests - so problems should be found during PULL requests at least. Thomas
