diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/about/deprecated.rst | 12 | ||||
| -rw-r--r-- | docs/system/riscv/virt.rst | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index ecccd5d3fc..78550c07bf 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -413,6 +413,18 @@ Specifying the iSCSI password in plain text on the command line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted. +CPU device properties +''''''''''''''''''''' + +``pmu-num=n`` on RISC-V CPUs (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In order to support more flexible counter configurations this has been replaced +by a ``pmu-mask`` property. If set of counters is continuous then the mask can +be calculated with ``((2 ^ n) - 1) << 3``. The least significant three bits +must be left clear. + + Backwards compatibility ----------------------- diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst index f9a2eac544..f5fa7b8b29 100644 --- a/docs/system/riscv/virt.rst +++ b/docs/system/riscv/virt.rst @@ -12,7 +12,7 @@ Supported devices The ``virt`` machine supports the following devices: -* Up to 8 generic RV32GC/RV64GC cores, with optional extensions +* Up to 512 generic RV32GC/RV64GC cores, with optional extensions * Core Local Interruptor (CLINT) * Platform-Level Interrupt Controller (PLIC) * CFI parallel NOR flash memory |