Commit 2ffbb3f6 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] spp: remove KVM_AWARE_CMF config option 



This config option enables or disables three single instructions
which aren't expensive. This is too fine grained.
Besided that everybody who uses kvm would enable it anyway in order
to debug performance problems.
Just remove it.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent bac9f154

arch/s390/kvm/Kconfig

+0 −11
Original line number Diff line number Diff line
@@ -33,17 +33,6 @@ config KVM 


	  If unsure, say N.



config KVM_AWARE_CMF

	depends on KVM

	bool "KVM aware sampling"

	---help---

	  This option enhances the sampling data from the CPU Measurement

	  Facility with additional information, that allows to distinguish

	  guest(s) and host when using the kernel based virtual machine

	  functionality.



	  If unsure, say N.



# OK, it's a little counter-intuitive to do this, but it puts it neatly under

# the virtualization menu.

source drivers/vhost/Kconfig

arch/s390/kvm/sie64a.S

+1 −3
Original line number Diff line number Diff line
@@ -32,12 +32,10 @@ SPI_PSW = STACK_FRAME_OVERHEAD + __PT_PSW 




	.macro SPP newpp

#ifdef CONFIG_KVM_AWARE_CMF

	tm	__LC_MACHINE_FLAGS+6,0x20	# MACHINE_FLAG_SPP

	jz	0f

	.insn	s,0xb2800000,\newpp

0:

#endif

	.endm



sie_irq_handler:

arch/s390/kernel/entry64.S

+1 −1

File changed.

Contains only whitespace changes.