| Message ID | 033764b9-6098-1949-e4e7-a21cafcc6901@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, 24 Aug 2017 09:42:28 +0800 Dou Liyang <douly.fnst@cn.fujitsu.com> wrote: > Hi Igor, > > At 08/24/2017 01:47 AM, Igor Mammedov wrote: > > On Wed, 23 Aug 2017 21:35:29 +0800 > > Dou Liyang <douly.fnst@cn.fujitsu.com> wrote: > > > >> Hi Igor, > >> > >> At 08/23/2017 08:45 PM, Igor Mammedov wrote: > >>> On Wed, 23 Aug 2017 20:12:51 +0800 > >>> Dou Liyang <douly.fnst@cn.fujitsu.com> wrote: > >>> > >>>> Hi Igor, > >>>> > >>>> At 08/23/2017 04:40 PM, Igor Mammedov wrote: > >>>>> On Tue, 22 Aug 2017 11:24:10 +0800 > >>>>> Dou Liyang <douly.fnst@cn.fujitsu.com> wrote: > >>>>> > >>>>>> As QEMU supports the memory-less node, it is possible that there is > >>>>>> no RAM in the first numa node(also be called as node0). eg: > >>>>>> ... \ > >>>>>> -m 128,slots=3,maxmem=1G \ > >>>>>> -numa node -numa node,mem=128M \ > >>>>>> > >>>>>> But, this makes it hard for QEMU to build a known-to-work ACPI SRAT > >>>>>> table. Only fixing it is not enough. > >>>>>> > >>>>>> Add a testcase for this situation to make sure the ACPI table is > >>>>>> correct for guest. > >>>>>> > >>>>>> Suggested-by: Eduardo Habkost <ehabkost@redhat.com> > >>>>>> Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> > >>>>>> --- > >>>>>> tests/acpi-test-data/pc/DSDT.numamem | Bin 0 -> 6463 bytes > >>>>>> tests/acpi-test-data/pc/SLIT.numamem | Bin 0 -> 48 bytes > >>>>>> tests/acpi-test-data/pc/SRAT.numamem | Bin 0 -> 264 bytes > >>>>>> tests/acpi-test-data/q35/DSDT.numamem | Bin 0 -> 9147 bytes > >>>>>> tests/acpi-test-data/q35/SLIT.numamem | Bin 0 -> 48 bytes > >>>>>> tests/acpi-test-data/q35/SRAT.numamem | Bin 0 -> 264 bytes > >>>>>> tests/bios-tables-test.c | 30 ++++++++++++++++++++++++++++++ > >>>>>> 7 files changed, 30 insertions(+) > >>>>>> create mode 100644 tests/acpi-test-data/pc/DSDT.numamem > >>>>>> create mode 100644 tests/acpi-test-data/pc/SLIT.numamem > >>>>>> create mode 100644 tests/acpi-test-data/pc/SRAT.numamem > >>>>>> create mode 100644 tests/acpi-test-data/q35/DSDT.numamem > >>>>>> create mode 100644 tests/acpi-test-data/q35/SLIT.numamem > >>>>>> create mode 100644 tests/acpi-test-data/q35/SRAT.numamem > >>>>> > >>>>> > >>>>> considering only SRAT table has been changed and the other > >>>>> tables match with default blobs, I'd suggest to keep only > >>>> > >>>> > >>>> Our testcase is： > >>>> > >>>> + test_acpi_one(" -m 128,slots=3,maxmem=1G" > >>>> + " -numa node -numa node,mem=128" > >>>> + " -numa dist,src=0,dst=1,val=21", > >>>> + &data); > >>>> > >>>> The DSDT and SLIT don't match with default blobs. > >>> do you actually need SLIT table /i.e. -numa dist/ for test at all? > >>> it looks not relevant for the test case at the hand, > >>> I'd suggest to drop '-numa dist' option for the test. > >>> > >> > >> OK, Got it, will drop '-numa dist' option in next version. > >> > >>>> > >>>> So, they can't be dropped. > >>> > >>> I wonder what's changed, could you post DSDT diff here? > >>> > >> > >> Just like memory hot-plug cases, when we use the '-m 128 > >> 128,slots=3,maxmem=1G' option, As the ACPI spec said, There may be some > >> Memory Device in the DSDT table. > > for your case '-numa node -numa node,mem=128', there is no need in enabling memory hotplug. > > Thank you very much for your kind explanation. > > Yes, I understood. > > > If I recall it correctly the default memory for x86 is 128Mb, > > hence removing "-m" would probably make DSDT match default one. > > Yes, I removed the "-m": > > test_acpi_one(" -numa node -numa node,mem=128", &data); > > but, the DSDT didn't match the default one. because, if we support > NUMA, the DSDT will give us "_PXM" to map the CPU to node. Ok, looks like you'll have to include your variant of DSDT along with SRAT
Hi Igor, At 08/24/2017 08:33 PM, Igor Mammedov wrote: >> > test_acpi_one(" -numa node -numa node,mem=128", &data); >> > >> > but, the DSDT didn't match the default one. because, if we support >> > NUMA, the DSDT will give us "_PXM" to map the CPU to node. > Ok, looks like you'll have to include your variant of DSDT along with SRAT > Yes, got it. I will modify and post this patch first. Thanks, dou. > >
--- a/tmp/asl-7QO54Y.dsl +++ b/tmp/asl-EWM54Y.dsl @@ -5,13 +5,13 @@ * * Disassembling to symbolic ASL+ operators * - * Disassembly of tests/acpi-test-data/pc/DSDT, Thu Aug 24 09:20:29 2017 + * Disassembly of /tmp/aml-1YM54Y, Thu Aug 24 09:20:29 2017 * * Original Table Header: * Signature "DSDT" - * Length 0x000013EA (5098) + * Length 0x000013F0 (5104) * Revision 0x01 **** 32-bit table (V1), no 64-bit math support - * Checksum 0x78 + * Checksum 0x13 * OEM ID "BOCHS " * OEM Table ID "BXPCDSDT"