* [PATCH v2] xen/x86: add a comment regarding how to get the VCPU ID on HVM
@ 2013-09-23 18:07 Roger Pau Monne
2013-10-07 10:21 ` Roger Pau Monné
0 siblings, 1 reply; 2+ messages in thread
From: Roger Pau Monne @ 2013-09-23 18:07 UTC (permalink / raw)
To: xen-devel; +Cc: Keir Fraser, Matt Wilson, Jan Beulich, Roger Pau Monne
Add a note to the public headers regarding how to get the VCPU ID for
HVM guests (on x86).
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Matt Wilson <msw@amazon.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Keir Fraser <keir@xen.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Matt Wilson <msw@amazon.com>
---
This is what Linux PVHVM does AFAIK, and also what I've been using in
my FreeBSD PVHVM series, but it's not written anywere.
---
Changes since v1:
* Reworded the comment as requested by Matt.
---
xen/include/public/vcpu.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/xen/include/public/vcpu.h b/xen/include/public/vcpu.h
index e888daf..f09367a 100644
--- a/xen/include/public/vcpu.h
+++ b/xen/include/public/vcpu.h
@@ -35,6 +35,10 @@
* @cmd == VCPUOP_??? (VCPU operation).
* @vcpuid == VCPU to operate on.
* @extra_args == Operation-specific extra arguments (NULL if none).
+ *
+ * For x86 HVM domains that use VCPU operations the VCPU ID is the ACPI
+ * Processor ID of the CPU (not to be confused with the APIC ID), as
+ * fetched from the MADT table.
*/
/*
--
1.7.7.5 (Apple Git-26)
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] xen/x86: add a comment regarding how to get the VCPU ID on HVM
2013-09-23 18:07 [PATCH v2] xen/x86: add a comment regarding how to get the VCPU ID on HVM Roger Pau Monne
@ 2013-10-07 10:21 ` Roger Pau Monné
0 siblings, 0 replies; 2+ messages in thread
From: Roger Pau Monné @ 2013-10-07 10:21 UTC (permalink / raw)
To: Roger Pau Monne; +Cc: xen-devel, Keir Fraser, Matt Wilson, Jan Beulich
Ping?
On 23/09/13 20:07, Roger Pau Monne wrote:
> Add a note to the public headers regarding how to get the VCPU ID for
> HVM guests (on x86).
>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
> Acked-by: Matt Wilson <msw@amazon.com>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Keir Fraser <keir@xen.org>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Cc: Matt Wilson <msw@amazon.com>
> ---
> This is what Linux PVHVM does AFAIK, and also what I've been using in
> my FreeBSD PVHVM series, but it's not written anywere.
> ---
> Changes since v1:
> * Reworded the comment as requested by Matt.
> ---
> xen/include/public/vcpu.h | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/xen/include/public/vcpu.h b/xen/include/public/vcpu.h
> index e888daf..f09367a 100644
> --- a/xen/include/public/vcpu.h
> +++ b/xen/include/public/vcpu.h
> @@ -35,6 +35,10 @@
> * @cmd == VCPUOP_??? (VCPU operation).
> * @vcpuid == VCPU to operate on.
> * @extra_args == Operation-specific extra arguments (NULL if none).
> + *
> + * For x86 HVM domains that use VCPU operations the VCPU ID is the ACPI
> + * Processor ID of the CPU (not to be confused with the APIC ID), as
> + * fetched from the MADT table.
> */
>
> /*
>
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
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