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[PATCH for-5.0 v2 5/9] acpi: cpuhp: spec: fix 'Command data' description
From: |
Igor Mammedov |
Subject: |
[PATCH for-5.0 v2 5/9] acpi: cpuhp: spec: fix 'Command data' description |
Date: |
Mon, 9 Dec 2019 14:08:58 +0100 |
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 <address@hidden>
Reviewed-by: Laszlo Ersek <address@hidden>
---
v2:
* rephrase a docs little bit (Laszlo)
---
docs/specs/acpi_cpu_hotplug.txt | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.txt
index 4e65286..d510872 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
--
2.7.4
- [PATCH for-5.0 v2 0/9] q35: CPU hotplug with secure boot, part 1+2, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 1/9] hw: add compat machines for 5.0, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 2/9] q35: implement 128K SMRAM at default SMBASE address, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 3/9] tests: q35: MCH: add default SMBASE SMRAM lock test, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 5/9] acpi: cpuhp: spec: fix 'Command data' description,
Igor Mammedov <=
- [PATCH for-5.0 v2 4/9] acpi: cpuhp: spec: clarify 'CPU selector' register usage and endianness, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 6/9] acpi: cpuhp: spec: clarify store into 'Command data' when 'Command field' == 0, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 9/9] acpi: cpuhp: add CPHP_GET_CPU_ID_CMD command, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 7/9] acpi: cpuhp: introduce 'Command data 2' field, Igor Mammedov, 2019/12/09
- [PATCH for-5.0 v2 8/9] acpi: cpuhp: spec: add typical usecases, Igor Mammedov, 2019/12/09
- Re: [PATCH for-5.0 v2 0/9] q35: CPU hotplug with secure boot, part 1+2, Igor Mammedov, 2019/12/19