Krzysztof Kozlowski
2020-Apr-14 14:26 UTC
[PATCH] iommu: spapr_tce: Disable compile testing to fix build on book3s_32 config
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/pgtable.h:17:0: error:
"_PAGE_EXEC" redefined [-Werror]
#define _PAGE_EXEC 0x00001 /* execute permission */
In file included from arch/powerpc/include/asm/book3s/32/pgtable.h:8:0,
from arch/powerpc/include/asm/book3s/pgtable.h:8,
from arch/powerpc/include/asm/pgtable.h:18,
from include/linux/mm.h:95,
from arch/powerpc/include/asm/io.h:29,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from arch/powerpc/include/asm/hardirq.h:6,
from include/linux/hardirq.h:9,
from include/linux/kvm_host.h:7,
from arch/powerpc/kvm/book3s_64_vio_hv.c:12:
arch/powerpc/include/asm/book3s/32/hash.h:29:0: note: this is the location
of the previous definition
#define _PAGE_EXEC 0x200 /* software: exec allowed */
Reported-by: Geert Uytterhoeven <geert at linux-m68k.org>
Fixes: e93a1695d7fb ("iommu: Enable compile testing for some of
drivers")
Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
---
drivers/iommu/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 58b4a4dbfc78..3532b1ead19d 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -362,7 +362,7 @@ config IPMMU_VMSA
config SPAPR_TCE_IOMMU
bool "sPAPR TCE IOMMU Support"
- depends on PPC_POWERNV || PPC_PSERIES || (PPC && COMPILE_TEST)
+ depends on PPC_POWERNV || PPC_PSERIES
select IOMMU_API
help
Enables bits of IOMMU API required by VFIO. The iommu_ops
--
2.17.1
Joerg Roedel
2020-Apr-18 12:46 UTC
[PATCH] iommu: spapr_tce: Disable compile testing to fix build on book3s_32 config
On Tue, Apr 14, 2020 at 04:26:30PM +0200, Krzysztof Kozlowski wrote:> Reported-by: Geert Uytterhoeven <geert at linux-m68k.org> > Fixes: e93a1695d7fb ("iommu: Enable compile testing for some of drivers") > Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org> > --- > drivers/iommu/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-)Applied, thanks.
Christophe Leroy
2020-Apr-18 15:14 UTC
[PATCH] iommu: spapr_tce: Disable compile testing to fix build on book3s_32 config
On 04/14/2020 02:26 PM, Krzysztof Kozlowski wrote:> 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/pgtable.h:17:0: error: "_PAGE_EXEC" redefined [-Werror] > #define _PAGE_EXEC 0x00001 /* execute permission */ > > In file included from arch/powerpc/include/asm/book3s/32/pgtable.h:8:0, > from arch/powerpc/include/asm/book3s/pgtable.h:8, > from arch/powerpc/include/asm/pgtable.h:18, > from include/linux/mm.h:95, > from arch/powerpc/include/asm/io.h:29, > from include/linux/io.h:13, > from include/linux/irq.h:20, > from arch/powerpc/include/asm/hardirq.h:6, > from include/linux/hardirq.h:9, > from include/linux/kvm_host.h:7, > from arch/powerpc/kvm/book3s_64_vio_hv.c:12: > arch/powerpc/include/asm/book3s/32/hash.h:29:0: note: this is the location of the previous definition > #define _PAGE_EXEC 0x200 /* software: exec allowed */ > > Reported-by: Geert Uytterhoeven <geert at linux-m68k.org> > Fixes: e93a1695d7fb ("iommu: Enable compile testing for some of drivers") > Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org> > --- > drivers/iommu/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig > index 58b4a4dbfc78..3532b1ead19d 100644 > --- a/drivers/iommu/Kconfig > +++ b/drivers/iommu/Kconfig > @@ -362,7 +362,7 @@ config IPMMU_VMSA > > config SPAPR_TCE_IOMMU > bool "sPAPR TCE IOMMU Support" > - depends on PPC_POWERNV || PPC_PSERIES || (PPC && COMPILE_TEST) > + depends on PPC_POWERNV || PPC_PSERIES > select IOMMU_API > help > Enables bits of IOMMU API required by VFIO. The iommu_ops >Should it be fixed the other way round, something like: diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 2bfeaa13befb..906707d15810 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -135,4 +135,4 @@ obj-$(CONFIG_KVM_BOOK3S_32) += kvm.o obj-$(CONFIG_KVM_BOOK3S_64_PR) += kvm-pr.o obj-$(CONFIG_KVM_BOOK3S_64_HV) += kvm-hv.o -obj-y += $(kvm-book3s_64-builtin-objs-y) +obj-$(CONFIG_KVM_BOOK3S_64) += $(kvm-book3s_64-builtin-objs-y) Christophe
Michael Ellerman
2020-Apr-20 03:04 UTC
[PATCH] iommu: spapr_tce: Disable compile testing to fix build on book3s_32 config
Christophe Leroy <christophe.leroy at c-s.fr> writes:> On 04/14/2020 02:26 PM, Krzysztof Kozlowski wrote: >> 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/pgtable.h:17:0: error: "_PAGE_EXEC" redefined [-Werror] >> #define _PAGE_EXEC 0x00001 /* execute permission */ >> >> In file included from arch/powerpc/include/asm/book3s/32/pgtable.h:8:0, >> from arch/powerpc/include/asm/book3s/pgtable.h:8, >> from arch/powerpc/include/asm/pgtable.h:18, >> from include/linux/mm.h:95, >> from arch/powerpc/include/asm/io.h:29, >> from include/linux/io.h:13, >> from include/linux/irq.h:20, >> from arch/powerpc/include/asm/hardirq.h:6, >> from include/linux/hardirq.h:9, >> from include/linux/kvm_host.h:7, >> from arch/powerpc/kvm/book3s_64_vio_hv.c:12: >> arch/powerpc/include/asm/book3s/32/hash.h:29:0: note: this is the location of the previous definition >> #define _PAGE_EXEC 0x200 /* software: exec allowed */ >> >> Reported-by: Geert Uytterhoeven <geert at linux-m68k.org> >> Fixes: e93a1695d7fb ("iommu: Enable compile testing for some of drivers") >> Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org> >> --- >> drivers/iommu/Kconfig | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig >> index 58b4a4dbfc78..3532b1ead19d 100644 >> --- a/drivers/iommu/Kconfig >> +++ b/drivers/iommu/Kconfig >> @@ -362,7 +362,7 @@ config IPMMU_VMSA >> >> config SPAPR_TCE_IOMMU >> bool "sPAPR TCE IOMMU Support" >> - depends on PPC_POWERNV || PPC_PSERIES || (PPC && COMPILE_TEST) >> + depends on PPC_POWERNV || PPC_PSERIES >> select IOMMU_API >> help >> Enables bits of IOMMU API required by VFIO. The iommu_ops >> > > Should it be fixed the other way round, something like:That doesn't actually fix this specific issue, the code will build but then not link: ld: arch/powerpc/../../virt/kvm/vfio.o: in function `.kvm_spapr_tce_release_vfio_group': vfio.c:(.text.kvm_spapr_tce_release_vfio_group+0xb0): undefined reference to `.kvm_spapr_tce_release_iommu_group' ld: arch/powerpc/../../virt/kvm/vfio.o: in function `.kvm_vfio_set_group': vfio.c:(.text.kvm_vfio_set_group+0x7f4): undefined reference to `.kvm_spapr_tce_attach_iommu_group' ld: arch/powerpc/kvm/powerpc.o: in function `.kvm_arch_vm_ioctl': (.text.kvm_arch_vm_ioctl+0x1a4): undefined reference to `.kvm_vm_ioctl_create_spapr_tce' ld: (.text.kvm_arch_vm_ioctl+0x230): undefined reference to `.kvm_vm_ioctl_create_spapr_tce' make[1]: *** [/home/michael/linux/Makefile:1106: vmlinux] Error 1> diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile > index 2bfeaa13befb..906707d15810 100644 > --- a/arch/powerpc/kvm/Makefile > +++ b/arch/powerpc/kvm/Makefile > @@ -135,4 +135,4 @@ obj-$(CONFIG_KVM_BOOK3S_32) += kvm.o > obj-$(CONFIG_KVM_BOOK3S_64_PR) += kvm-pr.o > obj-$(CONFIG_KVM_BOOK3S_64_HV) += kvm-hv.o > > -obj-y += $(kvm-book3s_64-builtin-objs-y) > +obj-$(CONFIG_KVM_BOOK3S_64) += $(kvm-book3s_64-builtin-objs-y)But this is probably still a good thing to do, as it would have made the error messages clearer in this case I think. cheers
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