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Diffstat (limited to 'tests/avocado/mem-addr-space-check.py')
| -rw-r--r-- | tests/avocado/mem-addr-space-check.py | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/tests/avocado/mem-addr-space-check.py b/tests/avocado/mem-addr-space-check.py deleted file mode 100644 index 85541ea..0000000 --- a/tests/avocado/mem-addr-space-check.py +++ /dev/null @@ -1,355 +0,0 @@ -# Check for crash when using memory beyond the available guest processor -# address space. -# -# Copyright (c) 2023 Red Hat, Inc. -# -# Author: -# Ani Sinha <anisinha@redhat.com> -# -# SPDX-License-Identifier: GPL-2.0-or-later - -from avocado_qemu import QemuSystemTest -import signal -import time - -class MemAddrCheck(QemuSystemTest): - # after launch, in order to generate the logs from QEMU we need to - # wait for some time. Launching and then immediately shutting down - # the VM generates empty logs. A delay of 1 second is added for - # this reason. - DELAY_Q35_BOOT_SEQUENCE = 1 - - # first, lets test some 32-bit processors. - # for all 32-bit cases, pci64_hole_size is 0. - def test_phybits_low_pse36(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - With pse36 feature ON, a processor has 36 bits of addressing. So it can - access up to a maximum of 64GiB of memory. Memory hotplug region begins - at 4 GiB boundary when "above_4g_mem_size" is 0 (this would be true when - we have 0.5 GiB of VM memory, see pc_q35_init()). This means total - hotpluggable memory size is 60 GiB. Per slot, we reserve 1 GiB of memory - for dimm alignment for all machines. That leaves total hotpluggable - actual memory size of 59 GiB. If the VM is started with 0.5 GiB of - memory, maxmem should be set to a maximum value of 59.5 GiB to ensure - that the processor can address all memory directly. - Note that 64-bit pci hole size is 0 in this case. If maxmem is set to - 59.6G, QEMU should fail to start with a message "phy-bits are too low". - If maxmem is set to 59.5G with all other QEMU parameters identical, QEMU - should start fine. - """ - self.vm.add_args('-S', '-machine', 'q35', '-m', - '512,slots=1,maxmem=59.6G', - '-cpu', 'pentium,pse36=on', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_low_pae(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - With pae feature ON, a processor has 36 bits of addressing. So it can - access up to a maximum of 64GiB of memory. Rest is the same as the case - with pse36 above. - """ - self.vm.add_args('-S', '-machine', 'q35', '-m', - '512,slots=1,maxmem=59.6G', - '-cpu', 'pentium,pae=on', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_pentium_pse36(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Setting maxmem to 59.5G and making sure that QEMU can start with the - same options as the failing case above with pse36 cpu feature. - """ - self.vm.add_args('-machine', 'q35', '-m', - '512,slots=1,maxmem=59.5G', - '-cpu', 'pentium,pse36=on', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_pentium_pae(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Test is same as above but now with pae cpu feature turned on. - Setting maxmem to 59.5G and making sure that QEMU can start fine - with the same options as the case above. - """ - self.vm.add_args('-machine', 'q35', '-m', - '512,slots=1,maxmem=59.5G', - '-cpu', 'pentium,pae=on', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_pentium2(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Pentium2 has 36 bits of addressing, so its same as pentium - with pse36 ON. - """ - self.vm.add_args('-machine', 'q35', '-m', - '512,slots=1,maxmem=59.5G', - '-cpu', 'pentium2', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_low_nonpse36(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Pentium processor has 32 bits of addressing without pse36 or pae - so it can access physical address up to 4 GiB. Setting maxmem to - 4 GiB should make QEMU fail to start with "phys-bits too low" - message because the region for memory hotplug is always placed - above 4 GiB due to the PCI hole and simplicity. - """ - self.vm.add_args('-S', '-machine', 'q35', '-m', - '512,slots=1,maxmem=4G', - '-cpu', 'pentium', '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - # now lets test some 64-bit CPU cases. - def test_phybits_low_tcg_q35_70_amd(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - For q35 7.1 machines and above, there is a HT window that starts at - 1024 GiB and ends at 1 TiB - 1. If the max GPA falls in this range, - "above_4G" memory is adjusted to start at 1 TiB boundary for AMD cpus - in the default case. Lets test without that case for machines 7.0. - For q35-7.0 machines, "above 4G" memory starts are 4G. - pci64_hole size is 32 GiB. Since TCG_PHYS_ADDR_BITS is defined to - be 40, TCG emulated CPUs have maximum of 1 TiB (1024 GiB) of - directly addressable memory. - Hence, maxmem value at most can be - 1024 GiB - 4 GiB - 1 GiB per slot for alignment - 32 GiB + 0.5 GiB - which is equal to 987.5 GiB. Setting the value to 988 GiB should - make QEMU fail with the error message. - """ - self.vm.add_args('-S', '-machine', 'pc-q35-7.0', '-m', - '512,slots=1,maxmem=988G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_low_tcg_q35_71_amd(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - AMD_HT_START is defined to be at 1012 GiB. So for q35 machines - version > 7.0 and AMD cpus, instead of 1024 GiB limit for 40 bit - processor address space, it has to be 1012 GiB , that is 12 GiB - less than the case above in order to accommodate HT hole. - Make sure QEMU fails when maxmem size is 976 GiB (12 GiB less - than 988 GiB). - """ - self.vm.add_args('-S', '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=976G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_tcg_q35_70_amd(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Same as q35-7.0 AMD case except that here we check that QEMU can - successfully start when maxmem is < 988G. - """ - self.vm.add_args('-S', '-machine', 'pc-q35-7.0', '-m', - '512,slots=1,maxmem=987.5G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_tcg_q35_71_amd(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Same as q35-7.1 AMD case except that here we check that QEMU can - successfully start when maxmem is < 976G. - """ - self.vm.add_args('-S', '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=975.5G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_tcg_q35_71_intel(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Same parameters as test_phybits_low_tcg_q35_71_amd() but use - Intel cpu instead. QEMU should start fine in this case as - "above_4G" memory starts at 4G. - """ - self.vm.add_args('-S', '-cpu', 'Skylake-Server', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=976G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_low_tcg_q35_71_amd_41bits(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - AMD processor with 41 bits. Max cpu hw address = 2 TiB. - By setting maxram above 1012 GiB - 32 GiB - 4 GiB = 976 GiB, we can - force "above_4G" memory to start at 1 TiB for q35-7.1 machines - (max GPA will be above AMD_HT_START which is defined as 1012 GiB). - - With pci_64_hole size at 32 GiB, in this case, maxmem should be 991.5 - GiB with 1 GiB per slot for alignment and 0.5 GiB as non-hotplug - memory for the VM (1024 - 32 - 1 + 0.5). With 992 GiB, QEMU should - fail to start. - """ - self.vm.add_args('-S', '-cpu', 'EPYC-v4,phys-bits=41', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=992G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_tcg_q35_71_amd_41bits(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - AMD processor with 41 bits. Max cpu hw address = 2 TiB. - Same as above but by setting maxram between 976 GiB and 992 Gib, - QEMU should start fine. - """ - self.vm.add_args('-S', '-cpu', 'EPYC-v4,phys-bits=41', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=990G', - '-display', 'none', - '-object', 'memory-backend-ram,id=mem1,size=1G', - '-device', 'pc-dimm,id=vm0,memdev=mem1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_low_tcg_q35_intel_cxl(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - cxl memory window starts after memory device range. Here, we use 1 GiB - of cxl window memory. 4G_mem end aligns at 4G. pci64_hole is 32 GiB and - starts after the cxl memory window. - So maxmem here should be at most 986 GiB considering all memory boundary - alignment constraints with 40 bits (1 TiB) of processor physical bits. - """ - self.vm.add_args('-S', '-cpu', 'Skylake-Server,phys-bits=40', - '-machine', 'q35,cxl=on', '-m', - '512,slots=1,maxmem=987G', - '-display', 'none', - '-device', 'pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1', - '-M', 'cxl-fmw.0.targets.0=cxl.1,cxl-fmw.0.size=1G') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - self.vm.wait() - self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1") - self.assertRegex(self.vm.get_log(), r'phys-bits too low') - - def test_phybits_ok_tcg_q35_intel_cxl(self): - """ - :avocado: tags=machine:q35 - :avocado: tags=arch:x86_64 - - Same as above but here we do not reserve any cxl memory window. Hence, - with the exact same parameters as above, QEMU should start fine even - with cxl enabled. - """ - self.vm.add_args('-S', '-cpu', 'Skylake-Server,phys-bits=40', - '-machine', 'q35,cxl=on', '-m', - '512,slots=1,maxmem=987G', - '-display', 'none', - '-device', 'pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1') - self.vm.set_qmp_monitor(enabled=False) - self.vm.launch() - time.sleep(self.DELAY_Q35_BOOT_SEQUENCE) - self.vm.shutdown() - self.assertNotRegex(self.vm.get_log(), r'phys-bits too low') |