| Message ID | 1411977758-24506-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 29.09.14 10:02, Aneesh Kumar K.V wrote: > We use cma reserved area for creating guest hash page table. > Don't do the reservation in non-hypervisor mode. This avoids unnecessary > CMA reservation when booting with limited memory configs like > fadump and kdump. > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Thanks, applied to kvm-ppc-queue. Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Il 29/09/2014 10:28, Alexander Graf ha scritto: > > > On 29.09.14 10:02, Aneesh Kumar K.V wrote: >> We use cma reserved area for creating guest hash page table. >> Don't do the reservation in non-hypervisor mode. This avoids unnecessary >> CMA reservation when booting with limited memory configs like >> fadump and kdump. >> >> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> > > Thanks, applied to kvm-ppc-queue. Would you like this in 3.18? Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 29.09.14 13:48, Paolo Bonzini wrote: > Il 29/09/2014 10:28, Alexander Graf ha scritto: >> >> >> On 29.09.14 10:02, Aneesh Kumar K.V wrote: >>> We use cma reserved area for creating guest hash page table. >>> Don't do the reservation in non-hypervisor mode. This avoids unnecessary >>> CMA reservation when booting with limited memory configs like >>> fadump and kdump. >>> >>> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> >> >> Thanks, applied to kvm-ppc-queue. > > Would you like this in 3.18? Yes, can you please directly apply it with my SoB (or Reviewed-by if you prefer)? Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Il 29/09/2014 13:57, Alexander Graf ha scritto: > > > On 29.09.14 13:48, Paolo Bonzini wrote: >> Il 29/09/2014 10:28, Alexander Graf ha scritto: >>> >>> >>> On 29.09.14 10:02, Aneesh Kumar K.V wrote: >>>> We use cma reserved area for creating guest hash page table. >>>> Don't do the reservation in non-hypervisor mode. This avoids unnecessary >>>> CMA reservation when booting with limited memory configs like >>>> fadump and kdump. >>>> >>>> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> >>> >>> Thanks, applied to kvm-ppc-queue. >> >> Would you like this in 3.18? > > Yes, can you please directly apply it with my SoB (or Reviewed-by if you > prefer)? Ok, will do. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index b9615ba5b083..4fdc27c80f4c 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -163,6 +163,12 @@ void __init kvm_cma_reserve(void) unsigned long align_size; struct memblock_region *reg; phys_addr_t selected_size = 0; + + /* + * We need CMA reservation only when we are in HV mode + */ + if (!cpu_has_feature(CPU_FTR_HVMODE)) + return; /* * We cannot use memblock_phys_mem_size() here, because * memblock_analyze() has not been called yet.
We use cma reserved area for creating guest hash page table. Don't do the reservation in non-hypervisor mode. This avoids unnecessary CMA reservation when booting with limited memory configs like fadump and kdump. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> --- arch/powerpc/kvm/book3s_hv_builtin.c | 6 ++++++ 1 file changed, 6 insertions(+)