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Diff for /wikisrc/ports/xen/howto.mdwn between versions 1.193 and 1.194

version 1.193, 2021/03/03 14:22:24 version 1.194, 2021/03/03 14:59:32
Line 176  want to set it as default.  It is highly Line 176  want to set it as default.  It is highly
 trouble at some point, and keeping an up-to-date GENERIC for use in  trouble at some point, and keeping an up-to-date GENERIC for use in
 fixing problems is the standard prudent approach.  fixing problems is the standard prudent approach.
   
   \todo Explain why rndseed is not set with Xen as part of the dom0
   subconfiguration.
   
 ### Console selection  ### Console selection
   
 See boot_console(8).  Understand that you should start from a place of  See boot_console(8).  Understand that you should start from a place of
Line 197  must also configure it for Xen. Line 200  must also configure it for Xen.
 By default, the hypervisor (Xen itself) will use some sort of vga  By default, the hypervisor (Xen itself) will use some sort of vga
 device as the console, much like GENERIC uses by default.  The vga  device as the console, much like GENERIC uses by default.  The vga
 console is relinquished at the conclusion of hypervisor boot, before  console is relinquished at the conclusion of hypervisor boot, before
 the dom0 is started.  the dom0 is started.  Xen when using a vga console does not process
   console input.
 \todo Explain if there is any notion of input to the Xen console;  
 there is something about 3 CTRL-As in a row.  Perhaps this is about  
 the serial console which is not relinquished?  
   
 The hypervisor can be configured to use a serial port console, e.g.  The hypervisor can be configured to use a serial port console, e.g.
 [[!template id=filecontent name="/boot.cfg" text="""  [[!template id=filecontent name="/boot.cfg" text="""
 menu=Xen:losad /netbsd-XEN3_DOM0.gz console=com0;multiboot /xen.gz dom0_mem=512M console=com1 com1=9600,8n1  menu=Xen:losad /netbsd-XEN3_DOM0.gz console=com0;multiboot /xen.gz dom0_mem=512M console=com1 com1=9600,8n1
 """]]  """]]
 This exampulee uses the first serial port (Xen counts from 1; this is  This example uses the first serial port (Xen counts from 1; this is
 what NetBSD would call com0), and sets speed and parity.  (The dom0 is  what NetBSD would call com0), and sets speed and parity.  (The dom0 is
 then configured to use the same serial port in this example.)  then configured to use the same serial port in this example.)
   
   With the hypervisor configured for a serial console, it can get input,
   and there is a notion of passing this input to the dom0.  \todo
   Explain why, if Xen has a serial console, the dom0 console is
   typically also configured to open that same serial port, instead of
   getting the passthrough input via the xen console.
   
 One also configures the console for the dom0.  While one might expect  One also configures the console for the dom0.  While one might expect
 console=pc to be default, following behavior of GENERIC, a hasty read  console=pc to be default, following behavior of GENERIC, a hasty read
 of the code suggests there is no default and booting without a  of the code suggests there is no default and booting without a
Removed from v.1.193  
changed lines
  Added in v.1.194

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