docs: i386: pc: Avoid mentioning limit of maximum vCPUs

[PATCH] docs: i386: pc: Avoid mentioning limit of maximum vCPUs

Posted by Zhao Liu 5 months, 3 weeks ago

Different versions of PC machine support different maximum vCPUs, and
even different features have limits on the maximum number of vCPUs (
For example, if x2apic is not enabled in the TCG case, the maximum of
255 vCPUs are supported).

It is difficult to list the maximum vCPUs under all restrictions. Thus,
to avoid confusion, avoid mentioning specific maximum vCPU number
limitations here.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 docs/system/target-i386-desc.rst.inc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/system/target-i386-desc.rst.inc b/docs/system/target-i386-desc.rst.inc
index 319e540573d3..ae312b1c1e61 100644
--- a/docs/system/target-i386-desc.rst.inc
+++ b/docs/system/target-i386-desc.rst.inc
@@ -36,7 +36,8 @@ The QEMU PC System emulator simulates the following peripherals:
 -  PCI UHCI, OHCI, EHCI or XHCI USB controller and a virtual USB-1.1
    hub.
 
-SMP is supported with up to 255 CPUs (and 4096 CPUs for PC Q35 machine).
+SMP is supported with a large number of virtual CPUs (upper limit is
+configuration dependent).
 
 QEMU uses the PC BIOS from the Seabios project and the Plex86/Bochs LGPL
 VGA BIOS.
-- 
2.34.1

Re: [PATCH] docs: i386: pc: Avoid mentioning limit of maximum vCPUs

Posted by Paolo Bonzini 5 months, 3 weeks ago

Queued, thanks.

Paolo

Re: [PATCH] docs: i386: pc: Avoid mentioning limit of maximum vCPUs

Posted by Daniel P. Berrangé 5 months, 3 weeks ago

On Thu, Jun 06, 2024 at 04:54:36PM +0800, Zhao Liu wrote:
> Different versions of PC machine support different maximum vCPUs, and
> even different features have limits on the maximum number of vCPUs (
> For example, if x2apic is not enabled in the TCG case, the maximum of
> 255 vCPUs are supported).
> 
> It is difficult to list the maximum vCPUs under all restrictions. Thus,
> to avoid confusion, avoid mentioning specific maximum vCPU number
> limitations here.
> 
> Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
> Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
> ---
>  docs/system/target-i386-desc.rst.inc | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
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