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| author | Igor Mammedov | 2019-12-09 14:08:58 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2020-01-22 06:23:07 +0100 |
| commit | 1c1d43bf015df2768bf832ea76752dd95286fc8f (patch) | |
| tree | fd8884d5a3f60556d93c55d1ce22abf3d685ea0d /docs/specs/acpi_cpu_hotplug.txt | |
| parent | acpi: cpuhp: spec: clarify 'CPU selector' register usage and endianness (diff) | |
| download | qemu-1c1d43bf015df2768bf832ea76752dd95286fc8f.tar.gz qemu-1c1d43bf015df2768bf832ea76752dd95286fc8f.tar.xz qemu-1c1d43bf015df2768bf832ea76752dd95286fc8f.zip | |
acpi: cpuhp: spec: fix 'Command data' description
Correct returned value description in case 'Command field' == 0x0,
it's not PXM but CPU selector value with pending event
In addition describe 0 blanket value in case of not supported
'Command field' value.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <1575896942-331151-6-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs/specs/acpi_cpu_hotplug.txt')
| -rw-r--r-- | docs/specs/acpi_cpu_hotplug.txt | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.txt index 4e65286ff5..d5108720bf 100644 --- a/docs/specs/acpi_cpu_hotplug.txt +++ b/docs/specs/acpi_cpu_hotplug.txt @@ -56,9 +56,8 @@ read access: 3-7: reserved and should be ignored by OSPM [0x5-0x7] reserved [0x8] Command data: (DWORD access) - in case of error or unsupported command reads is 0xFFFFFFFF - current 'Command field' value: - 0: returns PXM value corresponding to device + contains 0 unless value last stored in 'Command field' is one of: + 0: contains 'CPU selector' value of a CPU with pending event[s] write access: offset: @@ -81,9 +80,9 @@ write access: value: 0: selects a CPU device with inserting/removing events and following reads from 'Command data' register return - selected CPU (CPU selector value). If no CPU with events - found, the current CPU selector doesn't change and - corresponding insert/remove event flags are not set. + selected CPU ('CPU selector' value). + If no CPU with events found, the current 'CPU selector' doesn't + change and corresponding insert/remove event flags are not modified. 1: following writes to 'Command data' register set OST event register in QEMU 2: following writes to 'Command data' register set OST status |