Commit 63703f37 authored by Kefeng Wang's avatar Kefeng Wang Committed by Linus Torvalds

mm: generalize ZONE_[DMA|DMA32]

ZONE_[DMA|DMA32] configs have duplicate definitions on platforms that
subscribe to 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.

Link: https://lkml.kernel.org/r/20210528074557.17768-1-wangkefeng.wang@huawei.comSigned-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Acked-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>	[RISC-V]
Acked-by: Michal Simek <michal.simek@xilinx.com>	[microblaze]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>		[powerpc]
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: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent db1d9152
......@@ -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
......
......@@ -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
......
......@@ -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
......@@ -306,14 +307,6 @@ 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
......
......@@ -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
......
......@@ -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
......
......@@ -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
......
......@@ -3274,13 +3274,6 @@ config I8253
select CLKSRC_I8253
select CLKEVT_I8253
select MIPS_EXTERNAL_TIMER
config ZONE_DMA
bool
config ZONE_DMA32
bool
endmenu
config TRAD_SIGNALS
......
......@@ -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
......
......@@ -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
......
......@@ -104,6 +104,7 @@ 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
......@@ -133,10 +134,6 @@ 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
......
......@@ -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
......
......@@ -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
......
......@@ -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
......
......@@ -761,6 +761,18 @@ 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
......
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