search for: book3s_64

Although SPAPR_TCE_IOMMU itself can be compile tested on certain PowerPC configurations, its presence makes arch/powerpc/kvm/Makefile to select modules which do not build in such configuration. The arch/powerpc/kvm/ modules use kvm_arch.spapr_tce_tables which exists only with CONFIG_PPC_BOOK3S_64. However these modules are selected when COMPILE_TEST and SPAPR_TCE_IOMMU are chosen leading to build failures: In file included from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20:0, from arch/powerpc/kvm/book3s_64_vio_hv.c:22: arch/powerpc/include/asm/book3s/64/pg...

Although SPAPR_TCE_IOMMU itself can be compile tested on certain PowerPC configurations, its presence makes arch/powerpc/kvm/Makefile to select modules which do not build in such configuration. The arch/powerpc/kvm/ modules use kvm_arch.spapr_tce_tables which exists only with CONFIG_PPC_BOOK3S_64. However these modules are selected when COMPILE_TEST and SPAPR_TCE_IOMMU are chosen leading to build failures: In file included from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20:0, from arch/powerpc/kvm/book3s_64_vio_hv.c:22: arch/powerpc/include/asm/book3s/64/pg...

...> Maybe we could create a Kconfig symbol to enforce point (2): prevent > > people from enabling it e.g. on x86. I will look into this - but it can > > be done by a patch on top, so I think this can be merged as is. > > > > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I > am not aware of any other users. Maybe create a symbol that would > be only selected by PPC_BOOK3S_64 ? I think some ARM systems are trying to support cross-endian configurations as well. Besides that, yes, this is more or less what I had in mind. > > > Or do yo...

...> Maybe we could create a Kconfig symbol to enforce point (2): prevent > > people from enabling it e.g. on x86. I will look into this - but it can > > be done by a patch on top, so I think this can be merged as is. > > > > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I > am not aware of any other users. Maybe create a symbol that would > be only selected by PPC_BOOK3S_64 ? I think some ARM systems are trying to support cross-endian configurations as well. Besides that, yes, this is more or less what I had in mind. > > > Or do yo...

..._TCE_IOMMU itself can be compile tested on certain PowerPC > configurations, its presence makes arch/powerpc/kvm/Makefile to select > modules which do not build in such configuration. > > The arch/powerpc/kvm/ modules use kvm_arch.spapr_tce_tables which exists > only with CONFIG_PPC_BOOK3S_64. However these modules are selected when > COMPILE_TEST and SPAPR_TCE_IOMMU are chosen leading to build failures: > > In file included from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20:0, > from arch/powerpc/kvm/book3s_64_vio_hv.c:22: > arch/powe...

...orce point (2): prevent > > > > people from enabling it e.g. on x86. I will look into this - but it can > > > > be done by a patch on top, so I think this can be merged as is. > > > > > > > > > > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I > > > am not aware of any other users. Maybe create a symbol that would > > > be only selected by PPC_BOOK3S_64 ? > > > > I think some ARM systems are trying to support cross-endian > > configurations as well. > > > > Besides that, y...

...orce point (2): prevent > > > > people from enabling it e.g. on x86. I will look into this - but it can > > > > be done by a patch on top, so I think this can be merged as is. > > > > > > > > > > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I > > > am not aware of any other users. Maybe create a symbol that would > > > be only selected by PPC_BOOK3S_64 ? > > > > I think some ARM systems are trying to support cross-endian > > configurations as well. > > > > Besides that, y...

...IAN_GUESTS > ---help--- > Support hosting virtualized guest machines. > > diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig > index 3caec2c..e028710 100644 > --- a/arch/powerpc/kvm/Kconfig > +++ b/arch/powerpc/kvm/Kconfig > @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV > select KVM_BOOK3S_HV_POSSIBLE > select MMU_NOTIFIER > select CMA > + select KVM_CROSS_ENDIAN_GUESTS > ---help--- > Support running unmodified book3s_64 guest kernels in > virtual machines on POWER7 and PPC970 processors that have > diff --git a/drivers/n...

...IAN_GUESTS > ---help--- > Support hosting virtualized guest machines. > > diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig > index 3caec2c..e028710 100644 > --- a/arch/powerpc/kvm/Kconfig > +++ b/arch/powerpc/kvm/Kconfig > @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV > select KVM_BOOK3S_HV_POSSIBLE > select MMU_NOTIFIER > select CMA > + select KVM_CROSS_ENDIAN_GUESTS > ---help--- > Support running unmodified book3s_64 guest kernels in > virtual machines on POWER7 and PPC970 processors that have > diff --git a/drivers/n...

On Wed, Jul 01, 2015 at 12:02:50PM -0700, Linus Torvalds wrote: > On Wed, Jul 1, 2015 at 2:31 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > > virtio/vhost: cross endian support > > Ugh. Does this really have to be dynamic? > > Can't virtio do the sane thing, and just use a _fixed_ endianness? > > Doing a unconditional byte swap is faster and simpler

On Wed, Jul 01, 2015 at 12:02:50PM -0700, Linus Torvalds wrote: > On Wed, Jul 1, 2015 at 2:31 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > > virtio/vhost: cross endian support > > Ugh. Does this really have to be dynamic? > > Can't virtio do the sane thing, and just use a _fixed_ endianness? > > Doing a unconditional byte swap is faster and simpler

...stripped binary). > > Maybe we could create a Kconfig symbol to enforce point (2): prevent > people from enabling it e.g. on x86. I will look into this - but it can > be done by a patch on top, so I think this can be merged as is. > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I am not aware of any other users. Maybe create a symbol that would be only selected by PPC_BOOK3S_64 ? > Or do you know of someone using kernel with all config options enabled > undiscriminately? > > Thanks, >

...e a Kconfig symbol to enforce point (2): prevent > > > people from enabling it e.g. on x86. I will look into this - but it can > > > be done by a patch on top, so I think this can be merged as is. > > > > > > > This cross-endian *oddity* is targeting PowerPC book3s_64 processors... I > > am not aware of any other users. Maybe create a symbol that would > > be only selected by PPC_BOOK3S_64 ? > > I think some ARM systems are trying to support cross-endian > configurations as well. > > Besides that, yes, this is more or less what I had...

...ct HAVE_KVM_IRQFD + select KVM_CROSS_ENDIAN_GUESTS ---help--- Support hosting virtualized guest machines. diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 3caec2c..e028710 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV select KVM_BOOK3S_HV_POSSIBLE select MMU_NOTIFIER select CMA + select KVM_CROSS_ENDIAN_GUESTS ---help--- Support running unmodified book3s_64 guest kernels in virtual machines on POWER7 and PPC970 processors that have diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index c...

...>> Support hosting virtualized guest machines. >> >> diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig >> index 3caec2c..e028710 100644 >> --- a/arch/powerpc/kvm/Kconfig >> +++ b/arch/powerpc/kvm/Kconfig >> @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV >> select KVM_BOOK3S_HV_POSSIBLE >> select MMU_NOTIFIER >> select CMA >> + select KVM_CROSS_ENDIAN_GUESTS >> ---help--- >> Support running unmodified book3s_64 guest kernels in >> virtual machines on POWER7 and PPC970 processors that have...

...virtualized guest machines. > >> > >> diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig > >> index 3caec2c..e028710 100644 > >> --- a/arch/powerpc/kvm/Kconfig > >> +++ b/arch/powerpc/kvm/Kconfig > >> @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV > >> select KVM_BOOK3S_HV_POSSIBLE > >> select MMU_NOTIFIER > >> select CMA > >> + select KVM_CROSS_ENDIAN_GUESTS > >> ---help--- > >> Support running unmodified book3s_64 guest kernels in > >> virtual machines on POW...

...virtualized guest machines. > >> > >> diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig > >> index 3caec2c..e028710 100644 > >> --- a/arch/powerpc/kvm/Kconfig > >> +++ b/arch/powerpc/kvm/Kconfig > >> @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV > >> select KVM_BOOK3S_HV_POSSIBLE > >> select MMU_NOTIFIER > >> select CMA > >> + select KVM_CROSS_ENDIAN_GUESTS > >> ---help--- > >> Support running unmodified book3s_64 guest kernels in > >> virtual machines on POW...