Commit 96bc9567 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

asm-generic/tlb, arch: Invert CONFIG_HAVE_RCU_TABLE_INVALIDATE 



Make issuing a TLB invalidate for page-table pages the normal case.

The reason is twofold:

 - too many invalidates is safer than too few,
 - most architectures use the linux page-tables natively
   and would thus require this.

Make it an opt-out, instead of an opt-in.

No change in behavior intended.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 8b6dd0c4

arch/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -383,7 +383,7 @@ config HAVE_ARCH_JUMP_LABEL_RELATIVE 
config HAVE_RCU_TABLE_FREE

	bool



config HAVE_RCU_TABLE_INVALIDATE

config HAVE_RCU_TABLE_NO_INVALIDATE

	bool



config HAVE_MMU_GATHER_PAGE_SIZE

arch/arm64/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -149,7 +149,6 @@ config ARM64 
	select HAVE_PERF_USER_STACK_DUMP

	select HAVE_REGS_AND_STACK_ACCESS_API

	select HAVE_RCU_TABLE_FREE

	select HAVE_RCU_TABLE_INVALIDATE

	select HAVE_RSEQ

	select HAVE_STACKPROTECTOR

	select HAVE_SYSCALL_TRACEPOINTS

arch/powerpc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -218,6 +218,7 @@ config PPC 
	select HAVE_PERF_REGS

	select HAVE_PERF_USER_STACK_DUMP

	select HAVE_RCU_TABLE_FREE		if SMP

	select HAVE_RCU_TABLE_NO_INVALIDATE	if HAVE_RCU_TABLE_FREE

	select HAVE_MMU_GATHER_PAGE_SIZE

	select HAVE_REGS_AND_STACK_ACCESS_API

	select HAVE_RELIABLE_STACKTRACE		if PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN

arch/sparc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ config SPARC64 
	select HAVE_KRETPROBES

	select HAVE_KPROBES

	select HAVE_RCU_TABLE_FREE if SMP

	select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE

	select HAVE_MEMBLOCK_NODE_MAP

	select HAVE_ARCH_TRANSPARENT_HUGEPAGE

	select HAVE_DYNAMIC_FTRACE

arch/x86/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -183,7 +183,6 @@ config X86 
	select HAVE_PERF_REGS

	select HAVE_PERF_USER_STACK_DUMP

	select HAVE_RCU_TABLE_FREE		if PARAVIRT

	select HAVE_RCU_TABLE_INVALIDATE	if HAVE_RCU_TABLE_FREE

	select HAVE_REGS_AND_STACK_ACCESS_API

	select HAVE_RELIABLE_STACKTRACE		if X86_64 && (UNWINDER_FRAME_POINTER || UNWINDER_ORC) && STACK_VALIDATION

	select HAVE_FUNCTION_ARG_ACCESS_API

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