tests/functional/test_mem_addr_space.py

19     # the VM generates empty logs. A delay of 1 second is added for
21     DELAY_Q35_BOOT_SEQUENCE = 1
31         hotpluggable memory size is 60 GiB. Per slot, we reserve 1 GiB of memory
37         59.6G, QEMU should fail to start with a message "phy-bits are too low".
38         If maxmem is set to 59.5G with all other QEMU parameters identical, QEMU
42                          '512,slots=1,maxmem=59.6G',
44                          '-object', 'memory-backend-ram,id=mem1,size=1G',
49         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
59                          '512,slots=1,maxmem=59.6G',
61                          '-object', 'memory-backend-ram,id=mem1,size=1G',
66         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
71         Setting maxmem to 59.5G and making sure that QEMU can start with the
75                          '512,slots=1,maxmem=59.5G',
77                          '-object', 'memory-backend-ram,id=mem1,size=1G',
88         Setting maxmem to 59.5G and making sure that QEMU can start fine
92                          '512,slots=1,maxmem=59.5G',
94                          '-object', 'memory-backend-ram,id=mem1,size=1G',
108                          '512,slots=1,maxmem=59.5G',
110                          '-object', 'memory-backend-ram,id=mem1,size=1G',
127                          '512,slots=1,maxmem=4G',
129                          '-object', 'memory-backend-ram,id=mem1,size=1G',
134         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
141         1024 GiB and ends at 1 TiB - 1. If the max GPA falls in this range,
142         "above_4G" memory is adjusted to start at 1 TiB boundary for AMD cpus
144         For q35-7.0 machines, "above 4G" memory starts are 4G.
146         be 40, TCG emulated CPUs have maximum of 1 TiB (1024 GiB) of
149         1024 GiB - 4 GiB - 1 GiB per slot for alignment - 32 GiB + 0.5 GiB
154                          '512,slots=1,maxmem=988G',
156                          '-object', 'memory-backend-ram,id=mem1,size=1G',
161         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
174                          '512,slots=1,maxmem=976G',
176                          '-object', 'memory-backend-ram,id=mem1,size=1G',
181         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
187         successfully start when maxmem is < 988G.
190                          '512,slots=1,maxmem=987.5G',
192                          '-object', 'memory-backend-ram,id=mem1,size=1G',
203         successfully start when maxmem is < 976G.
206                          '512,slots=1,maxmem=975.5G',
208                          '-object', 'memory-backend-ram,id=mem1,size=1G',
220         "above_4G" memory starts at 4G.
224                          '512,slots=1,maxmem=976G',
226                          '-object', 'memory-backend-ram,id=mem1,size=1G',
238         force "above_4G" memory to start at 1 TiB for q35-7.1 machines
242         GiB with 1 GiB per slot for alignment and 0.5 GiB as non-hotplug
243         memory for the VM (1024 - 32 - 1 + 0.5). With 992 GiB, QEMU should
248                          '512,slots=1,maxmem=992G',
250                          '-object', 'memory-backend-ram,id=mem1,size=1G',
255         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
266                          '512,slots=1,maxmem=990G',
268                          '-object', 'memory-backend-ram,id=mem1,size=1G',
278         cxl memory window starts after memory device range. Here, we use 1 GiB
279         of cxl window memory. 4G_mem end aligns at 4G. pci64_hole is 32 GiB and
282         alignment constraints with 40 bits (1 TiB) of processor physical bits.
286                          '512,slots=1,maxmem=987G',
288                          '-device', 'pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1',
289                          '-M', 'cxl-fmw.0.targets.0=cxl.1,cxl-fmw.0.size=1G')
293         self.assertEqual(self.vm.exitcode(), 1, "QEMU exit code should be 1")
304                          '512,slots=1,maxmem=987G',
306                          '-device', 'pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1')