diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-05-26 23:26:21 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-05-26 23:26:30 +0200 |
| commit | 2ffbb3f61e5b2648128f82fe7e506290702a9215 (patch) | |
| tree | e5c9f60789c6f9e7253c07f6a11bfe690552117b | |
| parent | bac9f154acd175afdf702cb7d7f5de1254b4b119 (diff) | |
[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: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/kernel/entry64.S | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/Kconfig | 11 | ||||
| -rw-r--r-- | arch/s390/kvm/sie64a.S | 4 |
3 files changed, 2 insertions, 15 deletions
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 178d92536d9..e7192e1cb67 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -65,7 +65,7 @@ _TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | \ ltgr %r3,%r3 jz 0f basr %r14,%r3 - 0: +0: #endif .endm diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index 2f4b687cc7f..a7251580891 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -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 diff --git a/arch/s390/kvm/sie64a.S b/arch/s390/kvm/sie64a.S index 31646bd0e46..7e9d30d567b 100644 --- a/arch/s390/kvm/sie64a.S +++ b/arch/s390/kvm/sie64a.S @@ -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 +0: .endm sie_irq_handler: |