mm: introduce include/linux/pgtable.h

The include/linux/pgtable.h is going to be the home of generic page table
manipulation functions.

Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and
make the latter include asm/pgtable.h.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/x86/kernel/acpi/boot.c

@@ -24,7 +24,7 @@
 #include <asm/e820/api.h>
 #include <asm/irqdomain.h>
 #include <asm/pci_x86.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/io_apic.h>
 #include <asm/apic.h>
 #include <asm/io.h>

arch/x86/kernel/acpi/sleep.c

@@ -12,7 +12,7 @@
 #include <linux/cpumask.h>
 #include <asm/segment.h>
 #include <asm/desc.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/cacheflush.h>
 #include <asm/realmode.h>
 

arch/x86/kernel/apic/apic_numachip.c

@@ -16,7 +16,7 @@
 #include <asm/numachip/numachip.h>
 #include <asm/numachip/numachip_csr.h>
 
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 
 #include "local.h"
 

arch/x86/kernel/cpu/bugs.c

@@ -26,7 +26,7 @@
 #include <asm/vmx.h>
 #include <asm/paravirt.h>
 #include <asm/alternative.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/set_memory.h>
 #include <asm/intel-family.h>
 #include <asm/e820/api.h>

arch/x86/kernel/cpu/common.c

@@ -35,7 +35,7 @@
 #include <asm/vsyscall.h>
 #include <linux/topology.h>
 #include <linux/cpumask.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <linux/atomic.h>
 #include <asm/proto.h>
 #include <asm/setup.h>

arch/x86/kernel/cpu/intel.c

@@ -11,7 +11,7 @@
 #include <linux/uaccess.h>
 
 #include <asm/cpufeature.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/msr.h>
 #include <asm/bugs.h>
 #include <asm/cpu.h>

arch/x86/kernel/crash_core_32.c

@@ -2,7 +2,7 @@
 
 #include <linux/crash_core.h>
 
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/setup.h>
 
 void arch_crash_save_vmcoreinfo(void)

arch/x86/kernel/crash_core_64.c

@@ -2,7 +2,7 @@
 
 #include <linux/crash_core.h>
 
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/setup.h>
 
 void arch_crash_save_vmcoreinfo(void)

arch/x86/kernel/early_printk.c

@@ -15,7 +15,7 @@
 #include <xen/hvc-console.h>
 #include <asm/pci-direct.h>
 #include <asm/fixmap.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <linux/usb/ehci_def.h>
 #include <linux/usb/xhci-dbgp.h>
 #include <asm/pci_x86.h>

arch/x86/kernel/espfix_64.c

@@ -29,7 +29,7 @@
 #include <linux/percpu.h>
 #include <linux/gfp.h>
 #include <linux/random.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/pgalloc.h>
 #include <asm/setup.h>
 #include <asm/espfix.h>

arch/x86/kernel/head64.c

@@ -26,7 +26,7 @@
 #include <asm/smp.h>
 #include <asm/setup.h>
 #include <asm/desc.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/sections.h>
 #include <asm/kdebug.h>

arch/x86/kernel/head_64.S

@@ -14,7 +14,7 @@
 #include <linux/threads.h>
 #include <linux/init.h>
 #include <asm/segment.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/page.h>
 #include <asm/msr.h>
 #include <asm/cache.h>

arch/x86/kernel/i8259.c

@@ -19,7 +19,7 @@
 #include <linux/atomic.h>
 #include <asm/timer.h>
 #include <asm/hw_irq.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/desc.h>
 #include <asm/apic.h>
 #include <asm/i8259.h>

arch/x86/kernel/irqinit.c

@@ -20,7 +20,7 @@
 #include <linux/atomic.h>
 #include <asm/timer.h>
 #include <asm/hw_irq.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/desc.h>
 #include <asm/apic.h>
 #include <asm/setup.h>

arch/x86/kernel/kprobes/core.c

@@ -45,7 +45,7 @@
 #include <asm/text-patching.h>
 #include <asm/cacheflush.h>
 #include <asm/desc.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <linux/uaccess.h>
 #include <asm/alternative.h>
 #include <asm/insn.h>

arch/x86/kernel/kprobes/opt.c

@@ -20,7 +20,7 @@
 #include <asm/text-patching.h>
 #include <asm/cacheflush.h>
 #include <asm/desc.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <linux/uaccess.h>
 #include <asm/alternative.h>
 #include <asm/insn.h>

arch/x86/kernel/paravirt.c

@@ -19,7 +19,7 @@
 #include <asm/debugreg.h>
 #include <asm/desc.h>
 #include <asm/setup.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/time.h>
 #include <asm/pgalloc.h>
 #include <asm/irq.h>

arch/x86/kernel/reboot.c

@@ -17,7 +17,7 @@
 #include <asm/io_apic.h>
 #include <asm/desc.h>
 #include <asm/hpet.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/proto.h>
 #include <asm/reboot_fixups.h>
 #include <asm/reboot.h>

arch/x86/kernel/smpboot.c

@@ -63,7 +63,7 @@
 #include <asm/realmode.h>
 #include <asm/cpu.h>
 #include <asm/numa.h>
-#include <asm/pgtable.h>
+#include <linux/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/mtrr.h>
 #include <asm/mwait.h>