diff options
Diffstat (limited to 'tests/functional/test_mem_addr_space.py')
| -rwxr-xr-x | tests/functional/test_mem_addr_space.py | 97 |
1 files changed, 66 insertions, 31 deletions
diff --git a/tests/functional/test_mem_addr_space.py b/tests/functional/test_mem_addr_space.py index bb0cf06..61b4a19 100755 --- a/tests/functional/test_mem_addr_space.py +++ b/tests/functional/test_mem_addr_space.py @@ -20,6 +20,25 @@ class MemAddrCheck(QemuSystemTest): # this reason. DELAY_Q35_BOOT_SEQUENCE = 1 + # This helper can go away when the 32-bit host deprecation + # turns into full & final removal of support. + def ensure_64bit_binary(self): + with open(self.qemu_bin, "rb") as fh: + ident = fh.read(4) + + # "\x7fELF" + if ident != bytes([0x7f, 0x45, 0x4C, 0x46]): + # Non-ELF file implies macOS or Windows which + # we already assume to be 64-bit only + return + + # bits == 1 -> 32-bit; bits == 2 -> 64-bit + bits = int.from_bytes(fh.read(1), byteorder='little') + if bits != 2: + # 32-bit ELF builds won't be able to address sufficient + # RAM to run the tests + self.skipTest("64-bit build host is required") + # first, lets test some 32-bit processors. # for all 32-bit cases, pci64_hole_size is 0. def test_phybits_low_pse36(self): @@ -38,8 +57,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-S', '-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') @@ -55,8 +75,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-S', '-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') @@ -71,8 +92,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-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') @@ -88,8 +110,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-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') @@ -104,8 +127,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-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') @@ -123,8 +147,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('q35') + self.vm.add_args('-S', '-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') @@ -150,8 +175,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.0') + self.vm.add_args('-S', '-m', '512,slots=1,maxmem=988G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -170,8 +196,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.1') + self.vm.add_args('-S', '-m', '512,slots=1,maxmem=976G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -186,8 +213,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.0') + self.vm.add_args('-S', '-m', '512,slots=1,maxmem=987.5G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -202,8 +230,9 @@ class MemAddrCheck(QemuSystemTest): 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', + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.1') + self.vm.add_args('-S', '-m', '512,slots=1,maxmem=975.5G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -219,9 +248,10 @@ class MemAddrCheck(QemuSystemTest): Intel cpu instead. QEMU should start fine in this case as "above_4G" memory starts at 4G. """ + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.1') self.vm.add_args('-S', '-cpu', 'Skylake-Server', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=976G', + '-m', '512,slots=1,maxmem=976G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -243,9 +273,10 @@ class MemAddrCheck(QemuSystemTest): memory for the VM (1024 - 32 - 1 + 0.5). With 992 GiB, QEMU should fail to start. """ + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.1') self.vm.add_args('-S', '-cpu', 'EPYC-v4,phys-bits=41', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=992G', + '-m', '512,slots=1,maxmem=992G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -261,9 +292,10 @@ class MemAddrCheck(QemuSystemTest): Same as above but by setting maxram between 976 GiB and 992 Gib, QEMU should start fine. """ + self.ensure_64bit_binary() + self.set_machine('pc-q35-7.1') self.vm.add_args('-S', '-cpu', 'EPYC-v4,phys-bits=41', - '-machine', 'pc-q35-7.1', '-m', - '512,slots=1,maxmem=990G', + '-m', '512,slots=1,maxmem=990G', '-display', 'none', '-object', 'memory-backend-ram,id=mem1,size=1G', '-device', 'pc-dimm,id=vm0,memdev=mem1') @@ -281,12 +313,13 @@ class MemAddrCheck(QemuSystemTest): 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.ensure_64bit_binary() + self.set_machine('q35') self.vm.add_args('-S', '-cpu', 'Skylake-Server,phys-bits=40', - '-machine', 'q35,cxl=on', '-m', - '512,slots=1,maxmem=987G', + '-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') + '-M', 'cxl=on,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() @@ -299,9 +332,11 @@ class MemAddrCheck(QemuSystemTest): with the exact same parameters as above, QEMU should start fine even with cxl enabled. """ + self.ensure_64bit_binary() + self.set_machine('q35') self.vm.add_args('-S', '-cpu', 'Skylake-Server,phys-bits=40', - '-machine', 'q35,cxl=on', '-m', - '512,slots=1,maxmem=987G', + '-machine', '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) |