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Bug 1078699

Summary: incorrect description in qemu-kvm man page - 'SMP is supported with up to 255 CPUs.'
Product: Red Hat Enterprise Linux 7 Reporter: Chao Yang <chayang>
Component: qemu-kvmAssignee: Radim Krčmář <rkrcmar>
Status: CLOSED NOTABUG QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0CC: acathrow, bsarathy, hhuang, huding, juzhang, knoel, michen, mkenneth, pschiffe, qzhang, virt-maint, xfu, xwei
Target Milestone: rcKeywords: ManPageChange
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 1030290 Environment:
Last Closed: 2014-07-14 17:52:52 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1030290    
Bug Blocks:    

Comment 1 Radim Krčmář 2014-07-14 17:52:52 UTC 
Eduardo Habkost explained the value in RHEL6 BZ 1030290 comment 2:

  The QEMU man page is about QEMU as a whole, not about specific machine-types 
  (which may have lower limits), or about specific accelerator limits (KVM has 
  lower limits), or about what Red Hat supports.

  QEMU itself supports up to 255 CPUs, but KVM and the rhel machine-types don't.

RHEL7 QEMU exits gracefully, with a clear stderr message containing the maximal number of supported VCPUs.