diff options
| -rw-r--r-- | docs/hyperv.txt | 2 | ||||
| -rw-r--r-- | include/hw/i386/vmport.h | 2 | ||||
| -rwxr-xr-x | scripts/analyze-migration.py | 3 | ||||
| -rwxr-xr-x | scripts/simplebench/bench_write_req.py | 170 | ||||
| -rw-r--r-- | target/i386/cpu.c | 228 | ||||
| -rw-r--r-- | target/i386/cpu.h | 4 | ||||
| -rw-r--r-- | target/i386/kvm.c | 4 | ||||
| -rw-r--r-- | tests/acceptance/boot_linux_console.py | 11 | ||||
| -rw-r--r-- | tests/acceptance/replay_kernel.py | 3 |
9 files changed, 254 insertions, 173 deletions
diff --git a/docs/hyperv.txt b/docs/hyperv.txt index 6518b716a9..5df00da54f 100644 --- a/docs/hyperv.txt +++ b/docs/hyperv.txt @@ -49,7 +49,7 @@ more efficiently. In particular, this enlightenment allows paravirtualized ====================== Enables paravirtualized spinlocks. The parameter indicates how many times spinlock acquisition should be attempted before indicating the situation to the -hypervisor. A special value 0xffffffff indicates "never to retry". +hypervisor. A special value 0xffffffff indicates "never notify". 3.4. hv-vpindex ================ diff --git a/include/hw/i386/vmport.h b/include/hw/i386/vmport.h index c380b9c1f0..8f5e27c6f5 100644 --- a/include/hw/i386/vmport.h +++ b/include/hw/i386/vmport.h @@ -4,7 +4,7 @@ #include "hw/isa/isa.h" #define TYPE_VMPORT "vmport" -typedef uint32_t (VMPortReadFunc)(void *opaque, uint32_t address); +typedef uint32_t VMPortReadFunc(void *opaque, uint32_t address); typedef enum { VMPORT_CMD_GETVERSION = 10, diff --git a/scripts/analyze-migration.py b/scripts/analyze-migration.py index 95838cbff3..d70ec7d33a 100755 --- a/scripts/analyze-migration.py +++ b/scripts/analyze-migration.py @@ -97,7 +97,8 @@ class MigrationFile(object): # Seek back to where we were at the beginning self.file.seek(entrypos, 0) - return data[jsonpos:jsonpos + jsonlen] + # explicit decode() needed for Python 3.5 compatibility + return data[jsonpos:jsonpos + jsonlen].decode("utf-8") def close(self): self.file.close() diff --git a/scripts/simplebench/bench_write_req.py b/scripts/simplebench/bench_write_req.py new file mode 100755 index 0000000000..ca1178fd68 --- /dev/null +++ b/scripts/simplebench/bench_write_req.py @@ -0,0 +1,170 @@ +#!/usr/bin/env python3 +# +# Test to compare performance of write requests for two qemu-img binary files. +# +# The idea of the test comes from intention to check the benefit of c8bb23cbdbe +# "qcow2: skip writing zero buffers to empty COW areas". +# +# Copyright (c) 2020 Virtuozzo International GmbH. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + + +import sys +import os +import subprocess +import simplebench + + +def bench_func(env, case): + """ Handle one "cell" of benchmarking table. """ + return bench_write_req(env['qemu_img'], env['image_name'], + case['block_size'], case['block_offset'], + case['cluster_size']) + + +def qemu_img_pipe(*args): + '''Run qemu-img and return its output''' + subp = subprocess.Popen(list(args), + stdout=subprocess.PIPE, + stderr=subprocess.STDOUT, + universal_newlines=True) + exitcode = subp.wait() + if exitcode < 0: + sys.stderr.write('qemu-img received signal %i: %s\n' + % (-exitcode, ' '.join(list(args)))) + return subp.communicate()[0] + + +def bench_write_req(qemu_img, image_name, block_size, block_offset, + cluster_size): + """Benchmark write requests + + The function creates a QCOW2 image with the given path/name. Then it runs + the 'qemu-img bench' command and makes series of write requests on the + image clusters. Finally, it returns the total time of the write operations + on the disk. + + qemu_img -- path to qemu_img executable file + image_name -- QCOW2 image name to create + block_size -- size of a block to write to clusters + block_offset -- offset of the block in clusters + cluster_size -- size of the image cluster + + Returns {'seconds': int} on success and {'error': str} on failure. + Return value is compatible with simplebench lib. + """ + + if not os.path.isfile(qemu_img): + print(f'File not found: {qemu_img}') + sys.exit(1) + + image_dir = os.path.dirname(os.path.abspath(image_name)) + if not os.path.isdir(image_dir): + print(f'Path not found: {image_name}') + sys.exit(1) + + image_size = 1024 * 1024 * 1024 + + args_create = [qemu_img, 'create', '-f', 'qcow2', '-o', + f'cluster_size={cluster_size}', + image_name, str(image_size)] + + count = int(image_size / cluster_size) - 1 + step = str(cluster_size) + + args_bench = [qemu_img, 'bench', '-w', '-n', '-t', 'none', '-c', + str(count), '-s', f'{block_size}', '-o', str(block_offset), + '-S', step, '-f', 'qcow2', image_name] + + try: + qemu_img_pipe(*args_create) + except OSError as e: + os.remove(image_name) + return {'error': 'qemu_img create failed: ' + str(e)} + + try: + ret = qemu_img_pipe(*args_bench) + except OSError as e: + os.remove(image_name) + return {'error': 'qemu_img bench failed: ' + str(e)} + + os.remove(image_name) + + if 'seconds' in ret: + ret_list = ret.split() + index = ret_list.index('seconds.') + return {'seconds': float(ret_list[index-1])} + else: + return {'error': 'qemu_img bench failed: ' + ret} + + +if __name__ == '__main__': + + if len(sys.argv) < 4: + program = os.path.basename(sys.argv[0]) + print(f'USAGE: {program} <path to qemu-img binary file> ' + '<path to another qemu-img to compare performance with> ' + '<full or relative name for QCOW2 image to create>') + exit(1) + + # Test-cases are "rows" in benchmark resulting table, 'id' is a caption + # for the row, other fields are handled by bench_func. + test_cases = [ + { + 'id': '<cluster front>', + 'block_size': 4096, + 'block_offset': 0, + 'cluster_size': 1048576 + }, + { + 'id': '<cluster middle>', + 'block_size': 4096, + 'block_offset': 524288, + 'cluster_size': 1048576 + }, + { + 'id': '<cross cluster>', + 'block_size': 1048576, + 'block_offset': 4096, + 'cluster_size': 1048576 + }, + { + 'id': '<cluster 64K>', + 'block_size': 4096, + 'block_offset': 0, + 'cluster_size': 65536 + }, + ] + + # Test-envs are "columns" in benchmark resulting table, 'id is a caption + # for the column, other fields are handled by bench_func. + # Set the paths below to desired values + test_envs = [ + { + 'id': '<qemu-img binary 1>', + 'qemu_img': f'{sys.argv[1]}', + 'image_name': f'{sys.argv[3]}' + }, + { + 'id': '<qemu-img binary 2>', + 'qemu_img': f'{sys.argv[2]}', + 'image_name': f'{sys.argv[3]}' + }, + ] + + result = simplebench.bench(bench_func, test_envs, test_cases, count=3, + initial_run=False) + print(simplebench.ascii(result)) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 49d8958528..1c58f764dc 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -338,68 +338,13 @@ static void encode_cache_cpuid80000006(CPUCacheInfo *l2, } } -/* - * Definitions used for building CPUID Leaf 0x8000001D and 0x8000001E - * Please refer to the AMD64 Architecture Programmer’s Manual Volume 3. - * Define the constants to build the cpu topology. Right now, TOPOEXT - * feature is enabled only on EPYC. So, these constants are based on - * EPYC supported configurations. We may need to handle the cases if - * these values change in future. - */ -/* Maximum core complexes in a node */ -#define MAX_CCX 2 -/* Maximum cores in a core complex */ -#define MAX_CORES_IN_CCX 4 -/* Maximum cores in a node */ -#define MAX_CORES_IN_NODE 8 -/* Maximum nodes in a socket */ -#define MAX_NODES_PER_SOCKET 4 - -/* - * Figure out the number of nodes required to build this config. - * Max cores in a node is 8 - */ -static int nodes_in_socket(int nr_cores) -{ - int nodes; - - nodes = DIV_ROUND_UP(nr_cores, MAX_CORES_IN_NODE); - - /* Hardware does not support config with 3 nodes, return 4 in that case */ - return (nodes == 3) ? 4 : nodes; -} - -/* - * Decide the number of cores in a core complex with the given nr_cores using - * following set constants MAX_CCX, MAX_CORES_IN_CCX, MAX_CORES_IN_NODE and - * MAX_NODES_PER_SOCKET. Maintain symmetry as much as possible - * L3 cache is shared across all cores in a core complex. So, this will also - * tell us how many cores are sharing the L3 cache. - */ -static int cores_in_core_complex(int nr_cores) -{ - int nodes; - - /* Check if we can fit all the cores in one core complex */ - if (nr_cores <= MAX_CORES_IN_CCX) { - return nr_cores; - } - /* Get the number of nodes required to build this config */ - nodes = nodes_in_socket(nr_cores); - - /* - * Divide the cores accros all the core complexes - * Return rounded up value - */ - return DIV_ROUND_UP(nr_cores, nodes * MAX_CCX); -} - /* Encode cache info for CPUID[8000001D] */ -static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs, - uint32_t *eax, uint32_t *ebx, - uint32_t *ecx, uint32_t *edx) +static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, + X86CPUTopoInfo *topo_info, + uint32_t *eax, uint32_t *ebx, + uint32_t *ecx, uint32_t *edx) { - uint32_t l3_cores; + uint32_t l3_threads; assert(cache->size == cache->line_size * cache->associativity * cache->partitions * cache->sets); @@ -408,10 +353,10 @@ static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs, /* L3 is shared among multiple cores */ if (cache->level == 3) { - l3_cores = cores_in_core_complex(cs->nr_cores); - *eax |= ((l3_cores * cs->nr_threads) - 1) << 14; + l3_threads = topo_info->cores_per_die * topo_info->threads_per_core; + *eax |= (l3_threads - 1) << 14; } else { - *eax |= ((cs->nr_threads - 1) << 14); + *eax |= ((topo_info->threads_per_core - 1) << 14); } assert(cache->line_size > 0); @@ -431,107 +376,58 @@ static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs, (cache->complex_indexing ? CACHE_COMPLEX_IDX : 0); } -/* Data structure to hold the configuration info for a given core index */ -struct core_topology { - /* core complex id of the current core index */ - int ccx_id; - /* - * Adjusted core index for this core in the topology - * This can be 0,1,2,3 with max 4 cores in a core complex - */ - int core_id; - /* Node id for this core index */ - int node_id; - /* Number of nodes in this config */ - int num_nodes; -}; - -/* - * Build the configuration closely match the EPYC hardware. Using the EPYC - * hardware configuration values (MAX_CCX, MAX_CORES_IN_CCX, MAX_CORES_IN_NODE) - * right now. This could change in future. - * nr_cores : Total number of cores in the config - * core_id : Core index of the current CPU - * topo : Data structure to hold all the config info for this core index - */ -static void build_core_topology(int nr_cores, int core_id, - struct core_topology *topo) -{ - int nodes, cores_in_ccx; - - /* First get the number of nodes required */ - nodes = nodes_in_socket(nr_cores); - - cores_in_ccx = cores_in_core_complex(nr_cores); - - topo->node_id = core_id / (cores_in_ccx * MAX_CCX); - topo->ccx_id = (core_id % (cores_in_ccx * MAX_CCX)) / cores_in_ccx; - topo->core_id = core_id % cores_in_ccx; - topo->num_nodes = nodes; -} - /* Encode cache info for CPUID[8000001E] */ -static void encode_topo_cpuid8000001e(CPUState *cs, X86CPU *cpu, - uint32_t *eax, uint32_t *ebx, - uint32_t *ecx, uint32_t *edx) +static void encode_topo_cpuid8000001e(X86CPU *cpu, X86CPUTopoInfo *topo_info, + uint32_t *eax, uint32_t *ebx, + uint32_t *ecx, uint32_t *edx) { - struct core_topology topo = {0}; - unsigned long nodes; - int shift; + X86CPUTopoIDs topo_ids; + + x86_topo_ids_from_apicid(cpu->apic_id, topo_info, &topo_ids); - build_core_topology(cs->nr_cores, cpu->core_id, &topo); *eax = cpu->apic_id; + /* - * CPUID_Fn8000001E_EBX - * 31:16 Reserved - * 15:8 Threads per core (The number of threads per core is - * Threads per core + 1) - * 7:0 Core id (see bit decoding below) - * SMT: - * 4:3 node id - * 2 Core complex id - * 1:0 Core id - * Non SMT: - * 5:4 node id - * 3 Core complex id - * 1:0 Core id + * CPUID_Fn8000001E_EBX [Core Identifiers] (CoreId) + * Read-only. Reset: 0000_XXXXh. + * See Core::X86::Cpuid::ExtApicId. + * Core::X86::Cpuid::CoreId_lthree[1:0]_core[3:0]_thread[1:0]; + * Bits Description + * 31:16 Reserved. + * 15:8 ThreadsPerCore: threads per core. Read-only. Reset: XXh. + * The number of threads per core is ThreadsPerCore+1. + * 7:0 CoreId: core ID. Read-only. Reset: XXh. + * + * NOTE: CoreId is already part of apic_id. Just use it. We can + * use all the 8 bits to represent the core_id here. */ - if (cs->nr_threads - 1) { - *ebx = ((cs->nr_threads - 1) << 8) | (topo.node_id << 3) | - (topo.ccx_id << 2) | topo.core_id; - } else { - *ebx = (topo.node_id << 4) | (topo.ccx_id << 3) | topo.core_id; - } + *ebx = ((topo_info->threads_per_core - 1) << 8) | (topo_ids.core_id & 0xFF); + /* - * CPUID_Fn8000001E_ECX - * 31:11 Reserved - * 10:8 Nodes per processor (Nodes per processor is number of nodes + 1) - * 7:0 Node id (see bit decoding below) - * 2 Socket id - * 1:0 Node id + * CPUID_Fn8000001E_ECX [Node Identifiers] (NodeId) + * Read-only. Reset: 0000_0XXXh. + * Core::X86::Cpuid::NodeId_lthree[1:0]_core[3:0]_thread[1:0]; + * Bits Description + * 31:11 Reserved. + * 10:8 NodesPerProcessor: Node per processor. Read-only. Reset: XXXb. + * ValidValues: + * Value Description + * 000b 1 node per processor. + * 001b 2 nodes per processor. + * 010b Reserved. + * 011b 4 nodes per processor. + * 111b-100b Reserved. + * 7:0 NodeId: Node ID. Read-only. Reset: XXh. + * + * NOTE: Hardware reserves 3 bits for number of nodes per processor. + * But users can create more nodes than the actual hardware can + * support. To genaralize we can use all the upper 8 bits for nodes. + * NodeId is combination of node and socket_id which is already decoded + * in apic_id. Just use it by shifting. */ - if (topo.num_nodes <= 4) { - *ecx = ((topo.num_nodes - 1) << 8) | (cpu->socket_id << 2) | - topo.node_id; - } else { - /* - * Node id fix up. Actual hardware supports up to 4 nodes. But with - * more than 32 cores, we may end up with more than 4 nodes. - * Node id is a combination of socket id and node id. Only requirement - * here is that this number should be unique accross the system. - * Shift the socket id to accommodate more nodes. We dont expect both - * socket id and node id to be big number at the same time. This is not - * an ideal config but we need to to support it. Max nodes we can have - * is 32 (255/8) with 8 cores per node and 255 max cores. We only need - * 5 bits for nodes. Find the left most set bit to represent the total - * number of nodes. find_last_bit returns last set bit(0 based). Left - * shift(+1) the socket id to represent all the nodes. - */ - nodes = topo.num_nodes - 1; - shift = find_last_bit(&nodes, 8); - *ecx = ((topo.num_nodes - 1) << 8) | (cpu->socket_id << (shift + 1)) | - topo.node_id; - } + *ecx = ((topo_info->dies_per_pkg - 1) << 8) | + ((cpu->apic_id >> apicid_die_offset(topo_info)) & 0xFF); + *edx = 0; } @@ -5995,20 +5891,20 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, } switch (count) { case 0: /* L1 dcache info */ - encode_cache_cpuid8000001d(env->cache_info_amd.l1d_cache, cs, - eax, ebx, ecx, edx); + encode_cache_cpuid8000001d(env->cache_info_amd.l1d_cache, + &topo_info, eax, ebx, ecx, edx); break; case 1: /* L1 icache info */ - encode_cache_cpuid8000001d(env->cache_info_amd.l1i_cache, cs, - eax, ebx, ecx, edx); + encode_cache_cpuid8000001d(env->cache_info_amd.l1i_cache, + &topo_info, eax, ebx, ecx, edx); break; case 2: /* L2 cache info */ - encode_cache_cpuid8000001d(env->cache_info_amd.l2_cache, cs, - eax, ebx, ecx, edx); + encode_cache_cpuid8000001d(env->cache_info_amd.l2_cache, + &topo_info, eax, ebx, ecx, edx); break; case 3: /* L3 cache info */ - encode_cache_cpuid8000001d(env->cache_info_amd.l3_cache, cs, - eax, ebx, ecx, edx); + encode_cache_cpuid8000001d(env->cache_info_amd.l3_cache, + &topo_info, eax, ebx, ecx, edx); break; default: /* end of info */ *eax = *ebx = *ecx = *edx = 0; @@ -6017,7 +5913,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, break; case 0x8000001E: assert(cpu->core_id <= 255); - encode_topo_cpuid8000001e(cs, cpu, + encode_topo_cpuid8000001e(cpu, &topo_info, eax, ebx, ecx, edx); break; case 0xC0000000: @@ -7263,7 +7159,7 @@ static Property x86_cpu_properties[] = { DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false), DEFINE_PROP_UINT32("hv-spinlocks", X86CPU, hyperv_spinlock_attempts, - HYPERV_SPINLOCK_NEVER_RETRY), + HYPERV_SPINLOCK_NEVER_NOTIFY), DEFINE_PROP_BIT64("hv-relaxed", X86CPU, hyperv_features, HYPERV_FEAT_RELAXED, 0), DEFINE_PROP_BIT64("hv-vapic", X86CPU, hyperv_features, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index d3097be6a5..f519d2bfd4 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -991,8 +991,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; #define HYPERV_FEAT_IPI 13 #define HYPERV_FEAT_STIMER_DIRECT 14 -#ifndef HYPERV_SPINLOCK_NEVER_RETRY -#define HYPERV_SPINLOCK_NEVER_RETRY 0xFFFFFFFF +#ifndef HYPERV_SPINLOCK_NEVER_NOTIFY +#define HYPERV_SPINLOCK_NEVER_NOTIFY 0xFFFFFFFF #endif #define EXCP00_DIVZ 0 diff --git a/target/i386/kvm.c b/target/i386/kvm.c index d87af57a23..9efb07e7c8 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -730,7 +730,7 @@ static bool hyperv_enabled(X86CPU *cpu) { CPUState *cs = CPU(cpu); return kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV) > 0 && - ((cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_RETRY) || + ((cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_NOTIFY) || cpu->hyperv_features || cpu->hyperv_passthrough); } @@ -1236,7 +1236,7 @@ static int hyperv_handle_properties(CPUState *cs, env->features[FEAT_HV_RECOMM_EAX] = c->eax; /* hv-spinlocks may have been overriden */ - if (cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_RETRY) { + if (cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_NOTIFY) { c->ebx = cpu->hyperv_spinlock_attempts; } } diff --git a/tests/acceptance/boot_linux_console.py b/tests/acceptance/boot_linux_console.py index 4a366ce93e..0118ed5915 100644 --- a/tests/acceptance/boot_linux_console.py +++ b/tests/acceptance/boot_linux_console.py @@ -485,6 +485,8 @@ class BootLinuxConsole(LinuxKernelTest): self.wait_for_console_pattern('Boot successful.') # TODO user command, for now the uart is stuck + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_cubieboard_initrd(self): """ :avocado: tags=arch:arm @@ -525,6 +527,8 @@ class BootLinuxConsole(LinuxKernelTest): 'system-control@1c00000') # cubieboard's reboot is not functioning; omit reboot test. + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_cubieboard_sata(self): """ :avocado: tags=arch:arm @@ -568,6 +572,7 @@ class BootLinuxConsole(LinuxKernelTest): 'sda') # cubieboard's reboot is not functioning; omit reboot test. + @skipUnless(os.getenv('AVOCADO_TIMEOUT_EXPECTED'), 'Test might timeout') def test_arm_quanta_gsj(self): """ :avocado: tags=arch:arm @@ -651,6 +656,8 @@ class BootLinuxConsole(LinuxKernelTest): self.wait_for_console_pattern( 'Give root password for system maintenance') + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_orangepi(self): """ :avocado: tags=arch:arm @@ -676,6 +683,8 @@ class BootLinuxConsole(LinuxKernelTest): console_pattern = 'Kernel command line: %s' % kernel_command_line self.wait_for_console_pattern(console_pattern) + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_orangepi_initrd(self): """ :avocado: tags=arch:arm @@ -718,6 +727,8 @@ class BootLinuxConsole(LinuxKernelTest): # Wait for VM to shut down gracefully self.vm.wait() + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_orangepi_sd(self): """ :avocado: tags=arch:arm diff --git a/tests/acceptance/replay_kernel.py b/tests/acceptance/replay_kernel.py index b79fc8daf8..952f429cac 100644 --- a/tests/acceptance/replay_kernel.py +++ b/tests/acceptance/replay_kernel.py @@ -13,6 +13,7 @@ import logging import time from avocado import skipIf +from avocado import skipUnless from avocado_qemu import wait_for_console_pattern from avocado.utils import archive from avocado.utils import process @@ -127,6 +128,8 @@ class ReplayKernel(LinuxKernelTest): self.run_rr(kernel_path, kernel_command_line, console_pattern, shift=1) @skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab') + @skipUnless(os.getenv('ARMBIAN_ARTIFACTS_CACHED'), + 'Test artifacts fetched from unreliable apt.armbian.com') def test_arm_cubieboard_initrd(self): """ :avocado: tags=arch:arm |