RE: [PATCH v2] Fix DEC truncation for greater than 0xffff_ffff/1000

2011-10-20 Thread Bhushan Bharat-R65777
-Original Message- From: Liu Yu-B13201 Sent: Wednesday, October 19, 2011 4:28 PM To: Bhushan Bharat-R65777; ag...@suse.de Cc: kvm-ppc@vger.kernel.org; bharatb.ya...@gmail.com; Bhushan Bharat- R65777 Subject: RE: [PATCH v2] Fix DEC truncation for greater than 0x_/1000

RE: [PATCH v2] Fix DEC truncation for greater than 0xffff_ffff/1000

2011-10-20 Thread Liu Yu-B13201
-Original Message- From: Bhushan Bharat-R65777 Sent: Thursday, October 20, 2011 2:41 PM To: Liu Yu-B13201; ag...@suse.de Cc: kvm-ppc@vger.kernel.org; bharatb.ya...@gmail.com Subject: RE: [PATCH v2] Fix DEC truncation for greater than 0x_/1000 -Original

Re: [PATCH] KVM: booke: Do Not start decrementer when SPRN_DEC set 0

2011-10-20 Thread Alexander Graf
On 17.10.2011, at 20:37, Bharat Bhushan wrote: As per specification the decrementer interrupt not happen when DEC is written with 0. So we should not start hrtimer with timeout = 0 as well. Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com --- arch/powerpc/kvm/emulate.c |8

Re: [PATCH]KVM: Fix DEC truncation for greater than 0xffff_ffff/1000

2011-10-20 Thread Alexander Graf
On 18.10.2011, at 10:05, Bharat Bhushan wrote: kvmppc_emulate_dec() uses dec_nsec of type unsigned long and does below calculation: dec_nsec = vcpu-arch.dec; dec_nsec *= 1000; This will truncate if DEC value vcpu-arch.dec is greater than 0x_/1000. For example :

RE: [PATCH] KVM: booke: Do Not start decrementer when SPRN_DEC set 0

2011-10-20 Thread Bhushan Bharat-R65777
-Original Message- From: kvm-ppc-ow...@vger.kernel.org [mailto:kvm-ppc- ow...@vger.kernel.org] On Behalf Of Alexander Graf Sent: Thursday, October 20, 2011 10:40 PM To: Bhushan Bharat-R65777 Cc: kvm-ppc@vger.kernel.org; bharatb.ya...@gmail.com; Bhushan Bharat- R65777 Subject: Re:

Re: [PATCH] KVM: booke: Do Not start decrementer when SPRN_DEC set 0

2011-10-20 Thread Alexander Graf
On 20.10.2011, at 10:43, Bhushan Bharat-R65777 wrote: -Original Message- From: kvm-ppc-ow...@vger.kernel.org [mailto:kvm-ppc- ow...@vger.kernel.org] On Behalf Of Alexander Graf Sent: Thursday, October 20, 2011 10:40 PM To: Bhushan Bharat-R65777 Cc: kvm-ppc@vger.kernel.org;

Re: [PATCH] KVM: booke: Do Not start decrementer when SPRN_DEC set 0

2011-10-20 Thread Alexander Graf
On 20.10.2011, at 10:15, Bhushan Bharat-R65777 wrote: -Original Message- From: kvm-ppc-ow...@vger.kernel.org [mailto:kvm-ppc- ow...@vger.kernel.org] On Behalf Of Alexander Graf Sent: Thursday, October 20, 2011 10:40 PM To: Bhushan Bharat-R65777 Cc: kvm-ppc@vger.kernel.org;