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/qemu/tests/qemu-iotests/
H A D142.out6 === Simple test for all cache modes ===
8 Testing: -drive file=TEST_DIR/t.qcow2,cache=none
9 QEMU X.Y.Z monitor - type 'help' for more information
12 Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
13 QEMU X.Y.Z monitor - type 'help' for more information
16 Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
17 QEMU X.Y.Z monitor - type 'help' for more information
20 Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
21 QEMU X.Y.Z monitor - type 'help' for more information
24 Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
[all …]
H A D1423 # Test for configuring cache modes of arbitrary nodes (requires O_DIRECT)
43 # We test all cache modes anyway, but O_DIRECT needs to be supported
51 if ! test -t 0; then
57 ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
70 _make_test_img -b "$TEST_IMG.base" $size -F $IMGFMT
73 echo === Simple test for all cache modes ===
76 run_qemu -drive file="$TEST_IMG",cache=none
77 run_qemu -drive file="$TEST_IMG",cache=directsync
78 run_qemu -drive file="$TEST_IMG",cache=writeback
79 run_qemu -drive file="$TEST_IMG",cache=writethrough
[all …]
H A D1034 # Test case for qcow2 metadata cache size specification
44 _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file
49 $QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io
56 $QEMU_IO -c "open -o cache-size=1.25M,l2-cache-size=1M,refcount-cache-size=0.25M $TEST_IMG" \
58 # l2-cache-size may not exceed cache-size
59 $QEMU_IO -c "open -o cache-size=1M,l2-cache-size=2M $TEST_IMG" 2>&1 \
61 # refcount-cache-size may not exceed cache-size
62 $QEMU_IO -c "open -o cache-size=1M,refcount-cache-size=2M $TEST_IMG" 2>&1 \
66 $QEMU_IO -c "open -o cache-size=0,l2-cache-size=0,refcount-cache-size=0 $TEST_IMG" \
69 # Invalid cache entry sizes
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H A D157.out6 Testing: cache='writeback' wce=''
7 Cache mode: writeback
8 Testing: cache='writeback' wce=',write-cache=auto'
9 Cache mode: writeback
10 Testing: cache='writeback' wce=',write-cache=on'
11 Cache mode: writeback
12 Testing: cache='writeback' wce=',write-cache=off'
13 Cache mode: writethrough
14 Testing: cache='writethrough' wce=''
15 Cache mode: writethrough
[all …]
H A D026.out11 Event: l1_update; errno: 5; imm: off; once: on; write -b
17 qemu-io: Failed to flush the L2 table cache: Input/output error
18 qemu-io: Failed to flush the refcount block cache: Input/output error
23 Event: l1_update; errno: 5; imm: off; once: off; write -b
24 qemu-io: Failed to flush the L2 table cache: Input/output error
25 qemu-io: Failed to flush the refcount block cache: Input/output error
35 Event: l1_update; errno: 28; imm: off; once: on; write -b
41 qemu-io: Failed to flush the L2 table cache: No space left on device
42 qemu-io: Failed to flush the refcount block cache: No space left on device
47 Event: l1_update; errno: 28; imm: off; once: off; write -b
[all …]
H A D026.out.nocache11 Event: l1_update; errno: 5; imm: off; once: on; write -b
17 qemu-io: Failed to flush the L2 table cache: Input/output error
18 qemu-io: Failed to flush the refcount block cache: Input/output error
23 Event: l1_update; errno: 5; imm: off; once: off; write -b
24 qemu-io: Failed to flush the L2 table cache: Input/output error
25 qemu-io: Failed to flush the refcount block cache: Input/output error
35 Event: l1_update; errno: 28; imm: off; once: on; write -b
41 qemu-io: Failed to flush the L2 table cache: No space left on device
42 qemu-io: Failed to flush the refcount block cache: No space left on device
47 Event: l1_update; errno: 28; imm: off; once: off; write -b
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H A D13744 # We are going to use lazy-refcounts
56 -c "reopen -o lazy-refcounts=on,pass-discard-request=on" \
57 -c "reopen -o lazy-refcounts=off,pass-discard-request=off" \
58 -c "reopen -o pass-discard-snapshot=on,pass-discard-other=on" \
59 -c "reopen -o pass-discard-snapshot=off,pass-discard-other=off" \
60 -c "reopen -o overlap-check=all" \
61 -c "reopen -o overlap-check=none" \
62 -c "reopen -o overlap-check=cached" \
63 -c "reopen -o overlap-check=constant" \
64 -c "reopen -o overlap-check.template=all" \
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H A D103.out8 qemu-io: can't open device TEST_DIR/t.IMGFMT: cache-size, l2-cache-size and refcount-cache-size may…
9 qemu-io: can't open device TEST_DIR/t.IMGFMT: l2-cache-size may not exceed cache-size
10 qemu-io: can't open device TEST_DIR/t.IMGFMT: refcount-cache-size may not exceed cache-size
11 qemu-io: can't open device TEST_DIR/t.IMGFMT: cache-size, l2-cache-size and refcount-cache-size may…
12 qemu-io: can't open device TEST_DIR/t.IMGFMT: L2 cache entry size must be a power of two between 51…
13 qemu-io: can't open device TEST_DIR/t.IMGFMT: L2 cache entry size must be a power of two between 51…
14 qemu-io: can't open device TEST_DIR/t.IMGFMT: L2 cache entry size must be a power of two between 51…
33 === Testing minimal L2 cache and COW ===
H A D172.out11 dev: isa-fdc, id ""
18 bus: floppy-bus.0
19 type floppy-bus
29 write-cache = "auto"
30 share-rw = false
31 account-invalid = "auto"
32 account-failed = "auto"
33 drive-type = "288"
36 === Using -fda/-fdb options ===
38 Testing: -fda TEST_DIR/t.qcow2
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H A D186.out6 Testing: -device floppy
7 QEMU X.Y.Z monitor - type 'help' for more information
9 /machine/peripheral-anon/device[1]: [not inserted]
10 Attached to: /machine/peripheral-anon/device[N]
14 Testing: -device floppy,id=qdev_id
15 QEMU X.Y.Z monitor - type 'help' for more information
22 Testing: -device ide-cd
23 QEMU X.Y.Z monitor - type 'help' for more information
25 /machine/peripheral-anon/device[1]: [not inserted]
26 Attached to: /machine/peripheral-anon/device[N]
[all …]
H A D137.out18 qemu-io: Parameter 'lazy-refcounts' expects 'on' or 'off'
19 qemu-io: cache-size, l2-cache-size and refcount-cache-size may not be set at the same time
20 qemu-io: l2-cache-size may not exceed cache-size
21 qemu-io: refcount-cache-size may not exceed cache-size
22 qemu-io: L2 cache entry size must be a power of two between 512 and the cluster size (65536)
23 qemu-io: L2 cache entry size must be a power of two between 512 and the cluster size (65536)
24 qemu-io: Refcount cache size too big
25 qemu-io: Conflicting values for qcow2 options 'overlap-check' ('constant') and 'overlap-check.templ…
26 qemu-io: Unsupported value 'blubb' for qcow2 option 'overlap-check'. Allowed are any of the followi…
27 qemu-io: Unsupported value 'blubb' for qcow2 option 'overlap-check'. Allowed are any of the followi…
[all …]
H A D15743 _require_devices virtio-blk
48 if ! test -t 0; then
54 ) | $QEMU -nodefaults -nographic -monitor stdio -serial none "$@"
70 if [ -n "$IMGKEYSECRET" ]; then
72 SYSEMU_EXTRA_ARGS="-object $SECRET_ARG"
88 for cache in "writeback" "writethrough"; do
89 for wce in "" ",write-cache=auto" ",write-cache=on" ",write-cache=off"; do
90 echo "Testing: cache='$cache' wce='$wce'"
92 | run_qemu $SYSEMU_EXTRA_ARGS -drive "$SYSEMU_DRIVE_ARG,cache=$cache" \
93 -device "virtio-blk,drive=none0$wce" \
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/qemu/migration/
H A Dpage_cache.c2 * Page cache for QEMU
3 * The cache is base on a hash of the page address
11 * See the COPYING file in the top-level directory.
19 #include "qemu/host-utils.h"
23 /* the page in cache will not be replaced in two cycles */
45 PageCache *cache; in cache_init() local
48 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cache size", in cache_init()
55 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cache size", in cache_init()
61 cache = g_try_malloc(sizeof(*cache)); in cache_init()
62 if (!cache) { in cache_init()
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H A Dpage_cache.h2 * Page cache for QEMU
3 * The cache is base on a hash of the page address
11 * See the COPYING file in the top-level directory.
18 /* Page cache for storing guest pages */
22 * cache_init: Initialize the page cache
25 * Returns new allocated cache or NULL on error
27 * @cache_size: cache size in bytes
28 * @page_size: cache page size
33 * cache_fini: free all cache resources
34 * @cache pointer to the PageCache struct
[all …]
/qemu/include/exec/
H A Dmemory_ldst_cached.h.inc27 static inline uint16_t ADDRESS_SPACE_LD_CACHED(uw)(MemoryRegionCache *cache,
30 assert(addr < cache->len && 2 <= cache->len - addr);
31 fuzz_dma_read_cb(cache->xlat + addr, 2, cache->mrs.mr);
32 if (likely(cache->ptr)) {
33 return LD_P(uw)(cache->ptr + addr);
35 return ADDRESS_SPACE_LD_CACHED_SLOW(uw)(cache, addr, attrs, result);
39 static inline uint32_t ADDRESS_SPACE_LD_CACHED(l)(MemoryRegionCache *cache,
42 assert(addr < cache->len && 4 <= cache->len - addr);
43 fuzz_dma_read_cb(cache->xlat + addr, 4, cache->mrs.mr);
44 if (likely(cache->ptr)) {
[all …]
/qemu/docs/
H A Dqcow2-cache.txt1 qcow2 L2/refcount cache configuration
3 Copyright (C) 2015, 2018-2020 Igalia, S.L.
7 later. See the COPYING file in the top-level directory.
10 ------------
12 performance significantly. However, setting the right cache sizes is
18 Please refer to the docs/interop/qcow2.rst file for an in-depth
23 --------
30 The 'qemu-img create' command supports specifying the size using the
33 qemu-img create -f qcow2 -o cluster_size=128K hd.qcow2 4G
37 -------------
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H A Dxbzrle.txt5 of VM downtime and the total live-migration time of Virtual machines.
15 be stored on the source. Those pages are stored in a dedicated cache
17 The larger the cache size the better the chances are that the page has already
18 been stored in the cache.
19 A small cache size will result in high cache miss rate.
20 Cache size can be changed before and during migration.
45 retrieving the old page content from the cache (default size of 64MB). The
55 XBZRLE has a sustained bandwidth of 2-2.5 GB/s for typical workloads making it
56 ideal for in-line, real-time encoding such as is needed for live-migration.
74 Cache update strategy
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/qemu/contrib/plugins/
H A Dcache.c5 * See the COPYING file in the top-level directory.
12 #include <qemu-plugin.h>
37 * A CacheSet is a set of cache blocks. A memory block that maps to a set can be
43 * whether a block is in the cache or not by searching for its tag.
45 * In order to search for memory data in the cache, the set identifier and tag
81 } Cache; typedef
92 void (*update_hit)(Cache *cache, int set, int blk);
93 void (*update_miss)(Cache *cache, int set, int blk);
95 void (*metadata_init)(Cache *cache);
96 void (*metadata_destroy)(Cache *cache);
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/qemu/block/
H A Dqed-l2-cache.c2 * QEMU Enhanced Disk Format L2 Cache
10 * See the COPYING.LIB file in the top-level directory.
15 * L2 table cache usage is as follows:
17 * An open image has one L2 table cache that is used to avoid accessing the
23 * table cache serves up recently referenced L2 tables.
25 * If there is a cache miss, that L2 table is read from the image file and
26 * committed to the cache. Subsequent accesses to that L2 table will be served
27 * from the cache until the table is evicted from the cache.
29 * L2 tables are also committed to the cache when new L2 tables are allocated
30 * in the image file. Since the L2 table cache is write-through, the new L2
[all …]
/qemu/qapi/
H A Dmachine-common.json1 # -*- Mode: Python -*-
5 # See the COPYING file in the top-level directory.
55 # topology settings (e.g., cache topology), and this special
56 # level means following the architecture-specific settings.
68 # combination of cache level and cache type.
70 # @l1d: L1 data cache.
72 # @l1i: L1 instruction cache.
74 # @l2: L2 (unified) cache.
76 # @l3: L3 (unified) cache
86 # Cache information for SMP system.
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/qemu/tests/qemu-iotests/tests/
H A Dblock-status-cache4 # Test cases for the block-status cache.
36 def setUp(self) -> None:
37 """Just create an empty image with a read-only NBD server on it"""
38 qemu_img_create('-f', iotests.imgfmt, test_img, str(image_size))
40 # Pass --allocation-depth to enable the qemu:allocation-depth context,
41 # which we are going to query to provoke a block-status inquiry with
43 assert qemu_nbd(f'--socket={nbd_sock}',
44 f'--format={iotests.imgfmt}',
45 '--persistent',
46 '--allocation-depth',
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/qemu/.gitlab-ci.d/
H A Dwindows.yml1 msys2-64bit:
4 - saas-windows-medium-amd64
5 cache:
8 - msys64/var/cache
9 - ccache
20 CONFIGURE_ARGS: --disable-system --enable-tools -Ddebug=false -Doptimization=0
22 GIT_FETCH_EXTRA_FLAGS: --no-tags --prune --quiet
24 name: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
27 - build/meson-logs/testlog.txt
29 junit: "build/meson-logs/testlog.junit.xml"
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/qemu/include/hw/virtio/
H A Dvirtio-access.h21 #include "hw/virtio/virtio-bus.h"
44 AddressSpace *dma_as = vdev->dma_as; in virtio_lduw_phys()
54 AddressSpace *dma_as = vdev->dma_as; in virtio_ldl_phys()
64 AddressSpace *dma_as = vdev->dma_as; in virtio_ldq_phys()
75 AddressSpace *dma_as = vdev->dma_as; in virtio_stw_phys()
87 AddressSpace *dma_as = vdev->dma_as; in virtio_stl_phys()
160 MemoryRegionCache *cache, in virtio_lduw_phys_cached() argument
164 return lduw_be_phys_cached(cache, pa); in virtio_lduw_phys_cached()
166 return lduw_le_phys_cached(cache, pa); in virtio_lduw_phys_cached()
170 MemoryRegionCache *cache, in virtio_ldl_phys_cached() argument
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/qemu/hw/core/
H A Dmachine-smp.c2 * QEMU Machine core (related to -smp parsing)
23 #include "qemu/error-report.h"
36 if (mc->smp_props.drawers_supported) { in cpu_hierarchy_to_string()
37 g_string_append_printf(s, "drawers (%u) * ", ms->smp.drawers); in cpu_hierarchy_to_string()
40 if (mc->smp_props.books_supported) { in cpu_hierarchy_to_string()
41 g_string_append_printf(s, "books (%u) * ", ms->smp.books); in cpu_hierarchy_to_string()
44 g_string_append_printf(s, "sockets (%u)", ms->smp.sockets); in cpu_hierarchy_to_string()
46 if (mc->smp_props.dies_supported) { in cpu_hierarchy_to_string()
47 g_string_append_printf(s, " * dies (%u)", ms->smp.dies); in cpu_hierarchy_to_string()
50 if (mc->smp_props.clusters_supported) { in cpu_hierarchy_to_string()
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/qemu/target/sparc/
H A Dasi.h31 /* VAC Cache flushing on sun4c and sun4 */
36 /* SPARCstation-5: only 6 bits are decoded. */
51 #define ASI_M_TXTC_TAG 0x0C /* Instruction Cache Tag; rw, ss */
52 #define ASI_M_TXTC_DATA 0x0D /* Instruction Cache Data; rw, ss */
53 #define ASI_M_DATAC_TAG 0x0E /* Data Cache Tag; rw, ss */
54 #define ASI_M_DATAC_DATA 0x0F /* Data Cache Data; rw, ss */
56 /* The following cache flushing ASIs work only with the 'sta'
62 #define ASI_M_FLUSH_PAGE 0x10 /* Flush I&D Cache Line (page); wo, ss */
63 #define ASI_M_FLUSH_SEG 0x11 /* Flush I&D Cache Line (seg); wo, ss */
64 #define ASI_M_FLUSH_REGION 0x12 /* Flush I&D Cache Line (region); wo, ss */
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