fuse: Set `max_pages` in `InitOut`

This field acts as a global upper bound on the size of any request so
read and write requests are truncated to fit this size even if
`max_readahead` and `max_write` are set to larger values.  Initialize
this field to the number of pages needed to fit the largest supported
requset size.

BUG=none
TEST=arc.PlayStore.vm

Change-Id: Ia82d3e5709971c642312c45b26c288a953dedb18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3299973
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>
2 files changed
tree: 98f6f522a99b96983abf3bf685a8c19fed2935e0
  1. .cargo/
  2. .devcontainer/
  3. .github/
  4. aarch64/
  5. acpi_tables/
  6. arch/
  7. bin/
  8. bit_field/
  9. ci/
  10. common/
  11. crosvm-fuzz/
  12. crosvm_plugin/
  13. devices/
  14. disk/
  15. docs/
  16. fuse/
  17. gpu_display/
  18. hypervisor/
  19. integration_tests/
  20. kernel_cmdline/
  21. kernel_loader/
  22. kvm/
  23. kvm_sys/
  24. libcras_stub/
  25. libcrosvm_control/
  26. libvda/
  27. linux_input_sys/
  28. logo/
  29. net_sys/
  30. net_util/
  31. power_monitor/
  32. protos/
  33. qcow_utils/
  34. resources/
  35. rutabaga_gfx/
  36. seccomp/
  37. src/
  38. system_api_stub/
  39. tests/
  40. third_party/
  41. tools/
  42. tpm2/
  43. tpm2-sys/
  44. usb_sys/
  45. usb_util/
  46. vfio_sys/
  47. vhost/
  48. virtio_sys/
  49. vm_control/
  50. vm_memory/
  51. x86_64/
  52. .dockerignore
  53. .gitignore
  54. .gitmodules
  55. .rustfmt.toml
  56. ARCHITECTURE.md
  57. Cargo.toml
  58. CONTRIBUTING.md
  59. LICENSE
  60. navbar.md
  61. OWNERS
  62. README.md
  63. run_tests
  64. rust-toolchain
  65. setup_cros_cargo.sh
  66. test_all
  67. unblocked_terms.txt
README.md

crosvm - The Chrome OS Virtual Machine Monitor

crosvm is a virtual machine monitor (VMM) based on Linux’s KVM hypervisor, with a focus on simplicity, security, and speed. crosvm is intended to run Linux guests, originally as a security boundary for running native applications on the Chrome OS platform. Compared to QEMU, crosvm doesn’t emulate architectures or real hardware, instead concentrating on paravirtualized devices, such as the virtio standard.

crosvm is currently used to run Linux/Android guests on Chrome OS devices.

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