| Message ID | 20210528074557.17768-1-wangkefeng.wang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] mm: generalize ZONE_[DMA|DMA32] | expand |
On Fri, 28 May 2021 00:45:57 PDT (-0700), wangkefeng.wang@huawei.com wrote: > ZONE_[DMA|DMA32] configs have duplicate definitions on platforms > that subscribe them. Instead, just make them generic options which > can be selected on applicable platforms. > > Also only x86/arm64 architectures could enable both ZONE_DMA and > ZONE_DMA32 if EXPERT, add ARCH_HAS_ZONE_DMA_SET to make dma zone > configurable and visible on the two architectures. > > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Geert Uytterhoeven <geert@linux-m68k.org> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Palmer Dabbelt <palmer@dabbelt.com> > Cc: Richard Henderson <rth@twiddle.net> > Cc: Russell King <linux@armlinux.org.uk> > Acked-by: Catalin Marinas <catalin.marinas@arm.com> # for arm64 > Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # for m68k > Acked-by: Mike Rapoport <rppt@linux.ibm.com> > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Palmer Dabbelt <palmerdabbelt@google.com> # for RISC-V > --- > v2: > -i386 can't enable ZONE_DMA32, fix it. > -make ZONE_DMA default y on X86 as before. > -collect ACKs > > arch/alpha/Kconfig | 5 +---- > arch/arm/Kconfig | 3 --- > arch/arm64/Kconfig | 9 +-------- > arch/ia64/Kconfig | 4 +--- > arch/m68k/Kconfig | 5 +---- > arch/microblaze/Kconfig | 4 +--- > arch/mips/Kconfig | 7 ------- > arch/powerpc/Kconfig | 4 ---- > arch/powerpc/platforms/Kconfig.cputype | 1 + > arch/riscv/Kconfig | 5 +---- > arch/s390/Kconfig | 4 +--- > arch/sparc/Kconfig | 5 +---- > arch/x86/Kconfig | 15 ++------------- > mm/Kconfig | 12 ++++++++++++ > 14 files changed, 23 insertions(+), 60 deletions(-) > > diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig > index 5998106faa60..6a69a14c4825 100644 > --- a/arch/alpha/Kconfig > +++ b/arch/alpha/Kconfig > @@ -40,6 +40,7 @@ config ALPHA > select MMU_GATHER_NO_RANGE > select SET_FS > select SPARSEMEM_EXTREME if SPARSEMEM > + select ZONE_DMA > help > The Alpha is a 64-bit general-purpose processor designed and > marketed by the Digital Equipment Corporation of blessed memory, > @@ -65,10 +66,6 @@ config GENERIC_CALIBRATE_DELAY > bool > default y > > -config ZONE_DMA > - bool > - default y > - > config GENERIC_ISA_DMA > bool > default y > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 24804f11302d..000c3f80b58e 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -218,9 +218,6 @@ config GENERIC_CALIBRATE_DELAY > config ARCH_MAY_HAVE_PC_FDC > bool > > -config ZONE_DMA > - bool > - > config ARCH_SUPPORTS_UPROBES > def_bool y > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 9f1d8566bbf9..42794474f37f 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -42,6 +42,7 @@ config ARM64 > select ARCH_HAS_SYSCALL_WRAPPER > select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT > select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST > + select ARCH_HAS_ZONE_DMA_SET if EXPERT > select ARCH_HAVE_ELF_PROT > select ARCH_HAVE_NMI_SAFE_CMPXCHG > select ARCH_INLINE_READ_LOCK if !PREEMPTION > @@ -307,14 +308,6 @@ config GENERIC_CSUM > config GENERIC_CALIBRATE_DELAY > def_bool y > > -config ZONE_DMA > - bool "Support DMA zone" if EXPERT > - default y > - > -config ZONE_DMA32 > - bool "Support DMA32 zone" if EXPERT > - default y > - > config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE > def_bool y > > diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig > index 279252e3e0f7..fd8503a0088a 100644 > --- a/arch/ia64/Kconfig > +++ b/arch/ia64/Kconfig > @@ -60,6 +60,7 @@ config IA64 > select NUMA if !FLATMEM > select PCI_MSI_ARCH_FALLBACKS if PCI_MSI > select SET_FS > + select ZONE_DMA32 > default y > help > The Itanium Processor Family is Intel's 64-bit successor to > @@ -72,9 +73,6 @@ config 64BIT > select ATA_NONSTANDARD if ATA > default y > > -config ZONE_DMA32 > - def_bool y > - > config MMU > bool > default y > diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig > index 372e4e69c43a..05a729c6ad7f 100644 > --- a/arch/m68k/Kconfig > +++ b/arch/m68k/Kconfig > @@ -34,6 +34,7 @@ config M68K > select SET_FS > select UACCESS_MEMCPY if !MMU > select VIRT_TO_BUS > + select ZONE_DMA > > config CPU_BIG_ENDIAN > def_bool y > @@ -62,10 +63,6 @@ config TIME_LOW_RES > config NO_IOPORT_MAP > def_bool y > > -config ZONE_DMA > - bool > - default y > - > config HZ > int > default 1000 if CLEOPATRA > diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig > index 0660f47012bc..14a67a42fcae 100644 > --- a/arch/microblaze/Kconfig > +++ b/arch/microblaze/Kconfig > @@ -43,6 +43,7 @@ config MICROBLAZE > select MMU_GATHER_NO_RANGE > select SPARSE_IRQ > select SET_FS > + select ZONE_DMA > > # Endianness selection > choice > @@ -60,9 +61,6 @@ config CPU_LITTLE_ENDIAN > > endchoice > > -config ZONE_DMA > - def_bool y > - > config ARCH_HAS_ILOG2_U32 > def_bool n > > diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig > index ed51970c08e7..430d5324f1af 100644 > --- a/arch/mips/Kconfig > +++ b/arch/mips/Kconfig > @@ -3277,13 +3277,6 @@ config I8253 > select CLKSRC_I8253 > select CLKEVT_I8253 > select MIPS_EXTERNAL_TIMER > - > -config ZONE_DMA > - bool > - > -config ZONE_DMA32 > - bool > - > endmenu > > config TRAD_SIGNALS > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index 088dd2afcfe4..0f78bb383a12 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -403,10 +403,6 @@ config PPC_ADV_DEBUG_DAC_RANGE > config PPC_DAWR > bool > > -config ZONE_DMA > - bool > - default y if PPC_BOOK3E_64 > - > config PGTABLE_LEVELS > int > default 2 if !PPC64 > diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype > index f998e655b570..7d271de8fcbd 100644 > --- a/arch/powerpc/platforms/Kconfig.cputype > +++ b/arch/powerpc/platforms/Kconfig.cputype > @@ -111,6 +111,7 @@ config PPC_BOOK3E_64 > select PPC_FPU # Make it a choice ? > select PPC_SMP_MUXED_IPI > select PPC_DOORBELL > + select ZONE_DMA > > endchoice > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index a8ad8eb76120..d29643dee126 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -103,6 +103,7 @@ config RISCV > select SYSCTL_EXCEPTION_TRACE > select THREAD_INFO_IN_TASK > select UACCESS_MEMCPY if !MMU > + select ZONE_DMA32 if 64BIT > > config ARCH_MMAP_RND_BITS_MIN > default 18 if 64BIT > @@ -132,10 +133,6 @@ config MMU > Select if you want MMU-based virtualised addressing space > support by paged memory management. If unsure, say 'Y'. > > -config ZONE_DMA32 > - bool > - default y if 64BIT > - > config VA_BITS > int > default 32 if 32BIT > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig > index b4c7c34069f8..daab9d56957a 100644 > --- a/arch/s390/Kconfig > +++ b/arch/s390/Kconfig > @@ -2,9 +2,6 @@ > config MMU > def_bool y > > -config ZONE_DMA > - def_bool y > - > config CPU_BIG_ENDIAN > def_bool y > > @@ -210,6 +207,7 @@ config S390 > select THREAD_INFO_IN_TASK > select TTY > select VIRT_CPU_ACCOUNTING > + select ZONE_DMA > # Note: keep the above list sorted alphabetically > > config SCHED_OMIT_FRAME_POINTER > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig > index 164a5254c91c..39679664cc9a 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -59,6 +59,7 @@ config SPARC32 > select CLZ_TAB > select HAVE_UID16 > select OLD_SIGACTION > + select ZONE_DMA > > config SPARC64 > def_bool 64BIT > @@ -141,10 +142,6 @@ config HIGHMEM > default y if SPARC32 > select KMAP_LOCAL > > -config ZONE_DMA > - bool > - default y if SPARC32 > - > config GENERIC_ISA_DMA > bool > default y if SPARC32 > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 0045e1b44190..11cf8a0d6800 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -33,6 +33,7 @@ config X86_64 > select NEED_DMA_MAP_STATE > select SWIOTLB > select ARCH_HAS_ELFCORE_COMPAT > + select ZONE_DMA32 > > config FORCE_DYNAMIC_FTRACE > def_bool y > @@ -93,6 +94,7 @@ config X86 > select ARCH_HAS_SYSCALL_WRAPPER > select ARCH_HAS_UBSAN_SANITIZE_ALL > select ARCH_HAS_DEBUG_WX > + select ARCH_HAS_ZONE_DMA_SET if EXPERT > select ARCH_HAVE_NMI_SAFE_CMPXCHG > select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI > select ARCH_MIGHT_HAVE_PC_PARPORT > @@ -343,9 +345,6 @@ config ARCH_SUSPEND_POSSIBLE > config ARCH_WANT_GENERAL_HUGETLB > def_bool y > > -config ZONE_DMA32 > - def_bool y if X86_64 > - > config AUDIT_ARCH > def_bool y if X86_64 > > @@ -393,16 +392,6 @@ config CC_HAS_SANE_STACKPROTECTOR > > menu "Processor type and features" > > -config ZONE_DMA > - bool "DMA memory allocation support" if EXPERT > - default y > - help > - DMA memory allocation support allows devices with less than 32-bit > - addressing to allocate within the first 16MB of address space. > - Disable if no such devices will be used. > - > - If unsure, say Y. > - > config SMP > bool "Symmetric multi-processing support" > help > diff --git a/mm/Kconfig b/mm/Kconfig > index 02d44e3420f5..16930f40f293 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -789,6 +789,18 @@ config ARCH_HAS_CACHE_LINE_SIZE > config ARCH_HAS_PTE_DEVMAP > bool > > +config ARCH_HAS_ZONE_DMA_SET > + bool > + > +config ZONE_DMA > + bool "Support DMA zone" if ARCH_HAS_ZONE_DMA_SET > + default y if ARM64 || X86 > + > +config ZONE_DMA32 > + bool "Support DMA32 zone" if ARCH_HAS_ZONE_DMA_SET > + depends on !X86_32 > + default y if ARM64 > + > config ZONE_DEVICE > bool "Device memory (pmem, HMM, etc...) hotplug support" > depends on MEMORY_HOTPLUG
On 5/28/21 9:45 AM, Kefeng Wang wrote: > ZONE_[DMA|DMA32] configs have duplicate definitions on platforms > that subscribe them. Instead, just make them generic options which > can be selected on applicable platforms. > > Also only x86/arm64 architectures could enable both ZONE_DMA and > ZONE_DMA32 if EXPERT, add ARCH_HAS_ZONE_DMA_SET to make dma zone > configurable and visible on the two architectures. > > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Geert Uytterhoeven <geert@linux-m68k.org> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Palmer Dabbelt <palmer@dabbelt.com> > Cc: Richard Henderson <rth@twiddle.net> > Cc: Russell King <linux@armlinux.org.uk> > Acked-by: Catalin Marinas <catalin.marinas@arm.com> # for arm64 > Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # for m68k > Acked-by: Mike Rapoport <rppt@linux.ibm.com> > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > --- > v2: > -i386 can't enable ZONE_DMA32, fix it. > -make ZONE_DMA default y on X86 as before. > -collect ACKs > > arch/alpha/Kconfig | 5 +---- > arch/arm/Kconfig | 3 --- > arch/arm64/Kconfig | 9 +-------- > arch/ia64/Kconfig | 4 +--- > arch/m68k/Kconfig | 5 +---- > arch/microblaze/Kconfig | 4 +--- > arch/mips/Kconfig | 7 ------- > arch/powerpc/Kconfig | 4 ---- > arch/powerpc/platforms/Kconfig.cputype | 1 + > arch/riscv/Kconfig | 5 +---- > arch/s390/Kconfig | 4 +--- > arch/sparc/Kconfig | 5 +---- > arch/x86/Kconfig | 15 ++------------- > mm/Kconfig | 12 ++++++++++++ > 14 files changed, 23 insertions(+), 60 deletions(-) > > diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig > index 5998106faa60..6a69a14c4825 100644 > --- a/arch/alpha/Kconfig > +++ b/arch/alpha/Kconfig > @@ -40,6 +40,7 @@ config ALPHA > select MMU_GATHER_NO_RANGE > select SET_FS > select SPARSEMEM_EXTREME if SPARSEMEM > + select ZONE_DMA > help > The Alpha is a 64-bit general-purpose processor designed and > marketed by the Digital Equipment Corporation of blessed memory, > @@ -65,10 +66,6 @@ config GENERIC_CALIBRATE_DELAY > bool > default y > > -config ZONE_DMA > - bool > - default y > - > config GENERIC_ISA_DMA > bool > default y > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 24804f11302d..000c3f80b58e 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -218,9 +218,6 @@ config GENERIC_CALIBRATE_DELAY > config ARCH_MAY_HAVE_PC_FDC > bool > > -config ZONE_DMA > - bool > - > config ARCH_SUPPORTS_UPROBES > def_bool y > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 9f1d8566bbf9..42794474f37f 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -42,6 +42,7 @@ config ARM64 > select ARCH_HAS_SYSCALL_WRAPPER > select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT > select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST > + select ARCH_HAS_ZONE_DMA_SET if EXPERT > select ARCH_HAVE_ELF_PROT > select ARCH_HAVE_NMI_SAFE_CMPXCHG > select ARCH_INLINE_READ_LOCK if !PREEMPTION > @@ -307,14 +308,6 @@ config GENERIC_CSUM > config GENERIC_CALIBRATE_DELAY > def_bool y > > -config ZONE_DMA > - bool "Support DMA zone" if EXPERT > - default y > - > -config ZONE_DMA32 > - bool "Support DMA32 zone" if EXPERT > - default y > - > config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE > def_bool y > > diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig > index 279252e3e0f7..fd8503a0088a 100644 > --- a/arch/ia64/Kconfig > +++ b/arch/ia64/Kconfig > @@ -60,6 +60,7 @@ config IA64 > select NUMA if !FLATMEM > select PCI_MSI_ARCH_FALLBACKS if PCI_MSI > select SET_FS > + select ZONE_DMA32 > default y > help > The Itanium Processor Family is Intel's 64-bit successor to > @@ -72,9 +73,6 @@ config 64BIT > select ATA_NONSTANDARD if ATA > default y > > -config ZONE_DMA32 > - def_bool y > - > config MMU > bool > default y > diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig > index 372e4e69c43a..05a729c6ad7f 100644 > --- a/arch/m68k/Kconfig > +++ b/arch/m68k/Kconfig > @@ -34,6 +34,7 @@ config M68K > select SET_FS > select UACCESS_MEMCPY if !MMU > select VIRT_TO_BUS > + select ZONE_DMA > > config CPU_BIG_ENDIAN > def_bool y > @@ -62,10 +63,6 @@ config TIME_LOW_RES > config NO_IOPORT_MAP > def_bool y > > -config ZONE_DMA > - bool > - default y > - > config HZ > int > default 1000 if CLEOPATRA > diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig > index 0660f47012bc..14a67a42fcae 100644 > --- a/arch/microblaze/Kconfig > +++ b/arch/microblaze/Kconfig > @@ -43,6 +43,7 @@ config MICROBLAZE > select MMU_GATHER_NO_RANGE > select SPARSE_IRQ > select SET_FS > + select ZONE_DMA > > # Endianness selection > choice > @@ -60,9 +61,6 @@ config CPU_LITTLE_ENDIAN > > endchoice > > -config ZONE_DMA > - def_bool y > - > config ARCH_HAS_ILOG2_U32 > def_bool n > Acked-by: Michal Simek <michal.simek@xilinx.com> # for MB Michal
Kefeng Wang <wangkefeng.wang@huawei.com> writes: > ZONE_[DMA|DMA32] configs have duplicate definitions on platforms > that subscribe them. Instead, just make them generic options which > can be selected on applicable platforms. > > Also only x86/arm64 architectures could enable both ZONE_DMA and > ZONE_DMA32 if EXPERT, add ARCH_HAS_ZONE_DMA_SET to make dma zone > configurable and visible on the two architectures. > > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Geert Uytterhoeven <geert@linux-m68k.org> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Palmer Dabbelt <palmer@dabbelt.com> > Cc: Richard Henderson <rth@twiddle.net> > Cc: Russell King <linux@armlinux.org.uk> > Acked-by: Catalin Marinas <catalin.marinas@arm.com> # for arm64 > Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # for m68k > Acked-by: Mike Rapoport <rppt@linux.ibm.com> > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > --- > v2: > -i386 can't enable ZONE_DMA32, fix it. > -make ZONE_DMA default y on X86 as before. > -collect ACKs > > arch/alpha/Kconfig | 5 +---- > arch/arm/Kconfig | 3 --- > arch/arm64/Kconfig | 9 +-------- > arch/ia64/Kconfig | 4 +--- > arch/m68k/Kconfig | 5 +---- > arch/microblaze/Kconfig | 4 +--- > arch/mips/Kconfig | 7 ------- > arch/powerpc/Kconfig | 4 ---- > arch/powerpc/platforms/Kconfig.cputype | 1 + Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) cheers
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 5998106faa60..6a69a14c4825 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -40,6 +40,7 @@ config ALPHA select MMU_GATHER_NO_RANGE select SET_FS select SPARSEMEM_EXTREME if SPARSEMEM + select ZONE_DMA help The Alpha is a 64-bit general-purpose processor designed and marketed by the Digital Equipment Corporation of blessed memory, @@ -65,10 +66,6 @@ config GENERIC_CALIBRATE_DELAY bool default y -config ZONE_DMA - bool - default y - config GENERIC_ISA_DMA bool default y diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 24804f11302d..000c3f80b58e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -218,9 +218,6 @@ config GENERIC_CALIBRATE_DELAY config ARCH_MAY_HAVE_PC_FDC bool -config ZONE_DMA - bool - config ARCH_SUPPORTS_UPROBES def_bool y diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 9f1d8566bbf9..42794474f37f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -42,6 +42,7 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_INLINE_READ_LOCK if !PREEMPTION @@ -307,14 +308,6 @@ config GENERIC_CSUM config GENERIC_CALIBRATE_DELAY def_bool y -config ZONE_DMA - bool "Support DMA zone" if EXPERT - default y - -config ZONE_DMA32 - bool "Support DMA32 zone" if EXPERT - default y - config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE def_bool y diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 279252e3e0f7..fd8503a0088a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -60,6 +60,7 @@ config IA64 select NUMA if !FLATMEM select PCI_MSI_ARCH_FALLBACKS if PCI_MSI select SET_FS + select ZONE_DMA32 default y help The Itanium Processor Family is Intel's 64-bit successor to @@ -72,9 +73,6 @@ config 64BIT select ATA_NONSTANDARD if ATA default y -config ZONE_DMA32 - def_bool y - config MMU bool default y diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 372e4e69c43a..05a729c6ad7f 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -34,6 +34,7 @@ config M68K select SET_FS select UACCESS_MEMCPY if !MMU select VIRT_TO_BUS + select ZONE_DMA config CPU_BIG_ENDIAN def_bool y @@ -62,10 +63,6 @@ config TIME_LOW_RES config NO_IOPORT_MAP def_bool y -config ZONE_DMA - bool - default y - config HZ int default 1000 if CLEOPATRA diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 0660f47012bc..14a67a42fcae 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -43,6 +43,7 @@ config MICROBLAZE select MMU_GATHER_NO_RANGE select SPARSE_IRQ select SET_FS + select ZONE_DMA # Endianness selection choice @@ -60,9 +61,6 @@ config CPU_LITTLE_ENDIAN endchoice -config ZONE_DMA - def_bool y - config ARCH_HAS_ILOG2_U32 def_bool n diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ed51970c08e7..430d5324f1af 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -3277,13 +3277,6 @@ config I8253 select CLKSRC_I8253 select CLKEVT_I8253 select MIPS_EXTERNAL_TIMER - -config ZONE_DMA - bool - -config ZONE_DMA32 - bool - endmenu config TRAD_SIGNALS diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 088dd2afcfe4..0f78bb383a12 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -403,10 +403,6 @@ config PPC_ADV_DEBUG_DAC_RANGE config PPC_DAWR bool -config ZONE_DMA - bool - default y if PPC_BOOK3E_64 - config PGTABLE_LEVELS int default 2 if !PPC64 diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index f998e655b570..7d271de8fcbd 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -111,6 +111,7 @@ config PPC_BOOK3E_64 select PPC_FPU # Make it a choice ? select PPC_SMP_MUXED_IPI select PPC_DOORBELL + select ZONE_DMA endchoice diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index a8ad8eb76120..d29643dee126 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -103,6 +103,7 @@ config RISCV select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK select UACCESS_MEMCPY if !MMU + select ZONE_DMA32 if 64BIT config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT @@ -132,10 +133,6 @@ config MMU Select if you want MMU-based virtualised addressing space support by paged memory management. If unsure, say 'Y'. -config ZONE_DMA32 - bool - default y if 64BIT - config VA_BITS int default 32 if 32BIT diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index b4c7c34069f8..daab9d56957a 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -2,9 +2,6 @@ config MMU def_bool y -config ZONE_DMA - def_bool y - config CPU_BIG_ENDIAN def_bool y @@ -210,6 +207,7 @@ config S390 select THREAD_INFO_IN_TASK select TTY select VIRT_CPU_ACCOUNTING + select ZONE_DMA # Note: keep the above list sorted alphabetically config SCHED_OMIT_FRAME_POINTER diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 164a5254c91c..39679664cc9a 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -59,6 +59,7 @@ config SPARC32 select CLZ_TAB select HAVE_UID16 select OLD_SIGACTION + select ZONE_DMA config SPARC64 def_bool 64BIT @@ -141,10 +142,6 @@ config HIGHMEM default y if SPARC32 select KMAP_LOCAL -config ZONE_DMA - bool - default y if SPARC32 - config GENERIC_ISA_DMA bool default y if SPARC32 diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0045e1b44190..11cf8a0d6800 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -33,6 +33,7 @@ config X86_64 select NEED_DMA_MAP_STATE select SWIOTLB select ARCH_HAS_ELFCORE_COMPAT + select ZONE_DMA32 config FORCE_DYNAMIC_FTRACE def_bool y @@ -93,6 +94,7 @@ config X86 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAS_DEBUG_WX + select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select ARCH_MIGHT_HAVE_PC_PARPORT @@ -343,9 +345,6 @@ config ARCH_SUSPEND_POSSIBLE config ARCH_WANT_GENERAL_HUGETLB def_bool y -config ZONE_DMA32 - def_bool y if X86_64 - config AUDIT_ARCH def_bool y if X86_64 @@ -393,16 +392,6 @@ config CC_HAS_SANE_STACKPROTECTOR menu "Processor type and features" -config ZONE_DMA - bool "DMA memory allocation support" if EXPERT - default y - help - DMA memory allocation support allows devices with less than 32-bit - addressing to allocate within the first 16MB of address space. - Disable if no such devices will be used. - - If unsure, say Y. - config SMP bool "Symmetric multi-processing support" help diff --git a/mm/Kconfig b/mm/Kconfig index 02d44e3420f5..16930f40f293 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -789,6 +789,18 @@ config ARCH_HAS_CACHE_LINE_SIZE config ARCH_HAS_PTE_DEVMAP bool +config ARCH_HAS_ZONE_DMA_SET + bool + +config ZONE_DMA + bool "Support DMA zone" if ARCH_HAS_ZONE_DMA_SET + default y if ARM64 || X86 + +config ZONE_DMA32 + bool "Support DMA32 zone" if ARCH_HAS_ZONE_DMA_SET + depends on !X86_32 + default y if ARM64 + config ZONE_DEVICE bool "Device memory (pmem, HMM, etc...) hotplug support" depends on MEMORY_HOTPLUG