| # Fuchsia Virtualization |
| |
| This directory contains the userspace portions of the Fuchsia Virtualization |
| stack. For a high level overview of Fuchsia Virtualization, see [Virtualization |
| Overview][ref.virtualization_overview]. |
| |
| If you just want to start using Virtualization, see [Getting |
| Started][ref.virtualization_get_started]. |
| |
| # Monitor Guest exit statistics |
| |
| `kstats -v` can print the number of Guest exits per second and the reason. For |
| example, the output on ARM64 appears as follows: |
| |
| ```none |
| cpu vm_entry vm_exit inst_abt data_abt wfx_inst sys_inst smc_inst ints |
| 0 43 43 0 6 27 1 0 9 |
| 1 226 225 0 111 3 17 0 94 |
| 2 109 109 0 60 8 7 0 35 |
| 3 58 58 0 21 12 2 0 23 |
| ``` |
| |
| The fields in the output are as follows: |
| - `inst_abt`: The amount of instruction abort exit. |
| - `data_abt`: The amount of data abort exit. |
| - `wfx_inst`: The amount of instruction wfe/wfi exit. |
| - `sys_inst`: The amount of systen register access exit. |
| - `smc_inst`: The amount of instruction smc exit. |
| - `ints` : The amount of interrupt exit. |
| |
| For `x64`, the output is as follows: |
| |
| ```none |
| cpu vm_entry vm_exit ints ints_win ept ctrl_reg msr(rd wr) inst(io hlt cpuid ple vmcall xsetbv) |
| 0 40 40 10 0 0 0 10 10 5 5 0 0 0 0 |
| ``` |
| |
| With the following fields: |
| - `ints` : The amount of interrupt exit. |
| - `ints_win` : The amount of interrupt window exit. |
| - `ept` : The amount of EPT violation exit. |
| - `ctrl_reg` : The amount of control register(CRx) access exit. |
| - `msr` : The amount of MSR register access exit (`rd/wr` is read/write). |
| - `inst` : the amount of some kinds of instruction exit. |
| |
| [ref.virtualization_overview]: |
| https://fuchsia.dev/fuchsia-src/development/virtualization/overview |
| [ref.virtualization_get_started]: |
| https://fuchsia.dev/fuchsia-src/development/virtualization/get_started |
