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Commit 44a01d5b authored by Hendrik Brueckner's avatar Hendrik Brueckner Committed by Martin Schwidefsky
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[S390] s390/hvc_console: z/VM IUCV hypervisor console support 



This patch introduces a new hypervisor console (HVC) back-end that provides
terminal access over the z/VM inter-user communication vehicle (IUCV).

The z/VM IUCV communication is independent of the regular tcp/ip network
and allows access even if there is no network connection between two
z/VM guest virtual machines.
The z/VM IUCV hypervisor console back-end helps the user to access a
z/VM guest virtual machine that lacks of network connectivity; and thus,
provides a "full-screen" terminal alternative to 3215/3270 terminal sessions.

Use the hvc_iucv=[0..8] kernel boot parameter to specify the number of
HVC terminals using a z/VM IUCV back-end.

A recent version of the s390-tools package is required to establish a
terminal connection to a z/VM IUCV hypervisor console back-end.

Signed-off-by: default avatarHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5d360a75

drivers/char/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -622,6 +622,16 @@ config HVC_BEAT 
	help

	  Toshiba's Cell Reference Set Beat Console device driver



config HVC_IUCV

	bool "z/VM IUCV Hypervisor console support (VM only)"

	depends on S390

	select HVC_DRIVER

	select IUCV

	default y

	help

	  This driver provides a Hypervisor console (HVC) back-end to access

	  a Linux (console) terminal via a z/VM IUCV communication path.



config HVC_XEN

	bool "Xen Hypervisor Console support"

	depends on XEN

drivers/char/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ obj-$(CONFIG_HVC_BEAT) += hvc_beat.o 
obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o

obj-$(CONFIG_HVC_IRQ)		+= hvc_irq.o

obj-$(CONFIG_HVC_XEN)		+= hvc_xen.o

obj-$(CONFIG_HVC_IUCV)		+= hvc_iucv.o

obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o

obj-$(CONFIG_RAW_DRIVER)	+= raw.o

obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o

drivers/char/hvc_iucv.c

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