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qemu / qemu / 43b8c4339709efef153cb2cf21d23d1791890d60
commit43b8c4339709efef153cb2cf21d23d1791890d60[log] [tgz]
authorZhenzhong Duan <zhenzhong.duan@intel.com>Fri Oct 17 05:36:00 2025 -0400
committerMichael S. Tsirkin <mst@redhat.com>Sun Nov 09 08:23:48 2025 -0500
tree497cf7c5727e2e9079f06260b170320db37fd9b6
parentfde5930cc37175cfcd0f03a089e26f4458a52311 [diff]
intel_iommu: Handle PASID cache invalidation

Adds a new entry VTDPASIDCacheEntry in VTDAddressSpace to cache the pasid
entry and track PASID usage and future PASID tagged DMA address translation
support in vIOMMU.

When guest triggers pasid cache invalidation, QEMU will capture it and
update or invalidate pasid cache.

vIOMMU emulator could figure out the reason by fetching latest guest pasid
entry in memory and compare it with cached PASID entry if it's valid.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20251017093602.525338-2-zhenzhong.duan@intel.com>
4 files changed
tree: 497cf7c5727e2e9079f06260b170320db37fd9b6
  1. .github/
  2. .gitlab/
  3. .gitlab-ci.d/
  4. accel/
  5. audio/
  6. authz/
  7. backends/
  8. block/
  9. bsd-user/
  10. chardev/
  11. common-user/
  12. configs/
  13. contrib/
  14. crypto/
  15. disas/
  16. docs/
  17. dump/
  18. ebpf/
  19. fpu/
  20. fsdev/
  21. gdb-xml/
  22. gdbstub/
  23. host/
  24. hw/
  25. include/
  26. io/
  27. libdecnumber/
  28. linux-headers/
  29. linux-user/
  30. migration/
  31. monitor/
  32. nbd/
  33. net/
  34. pc-bios/
  35. plugins/
  36. po/
  37. python/
  38. qapi/
  39. qga/
  40. qobject/
  41. qom/
  42. replay/
  43. roms/
  44. rust/
  45. scripts/
  46. scsi/
  47. semihosting/
  48. stats/
  49. storage-daemon/
  50. stubs/
  51. subprojects/
  52. system/
  53. target/
  54. tcg/
  55. tests/
  56. tools/
  57. trace/
  58. ui/
  59. util/
  60. .b4-config
  61. .dir-locals.el
  62. .editorconfig
  63. .exrc
  64. .gdbinit
  65. .git-blame-ignore-revs
  66. .gitattributes
  67. .gitignore
  68. .gitlab-ci.yml
  69. .gitmodules
  70. .gitpublish
  71. .mailmap
  72. .patchew.yml
  73. .readthedocs.yml
  74. .travis.yml
  75. block.c
  76. blockdev-nbd.c
  77. blockdev.c
  78. blockjob.c
  79. clippy.toml
  80. configure
  81. COPYING
  82. COPYING.LIB
  83. cpu-common.c
  84. cpu-target.c
  85. event-loop-base.c
  86. gitdm.config
  87. hmp-commands-info.hx
  88. hmp-commands.hx
  89. iothread.c
  90. job-qmp.c
  91. job.c
  92. Kconfig
  93. Kconfig.host
  94. LICENSE
  95. MAINTAINERS
  96. Makefile
  97. meson.build
  98. meson_options.txt
  99. module-common.c
  100. os-posix.c
  101. os-wasm.c
  102. os-win32.c
  103. page-vary-common.c
  104. page-vary-target.c
  105. pythondeps.toml
  106. qemu-bridge-helper.c
  107. qemu-edid.c
  108. qemu-img-cmds.hx
  109. qemu-img.c
  110. qemu-io-cmds.c
  111. qemu-io.c
  112. qemu-keymap.c
  113. qemu-nbd.c
  114. qemu-options.hx
  115. qemu.nsi
  116. qemu.sasl
  117. README.rst
  118. replication.c
  119. target-info-qom.c
  120. target-info-stub.c
  121. target-info.c
  122. trace-events
  123. VERSION
  124. version.rc