Re: [PATCH v7 4/4] powerpc: Book3S 64-bit "heavyweight" KASAN support

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Le 13/02/2020 à 01:47, Daniel Axtens a écrit :
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 497b7d0b2d7e..f1c54c08a88e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -169,7 +169,9 @@ config PPC
  	select HAVE_ARCH_HUGE_VMAP		if PPC_BOOK3S_64 && PPC_RADIX_MMU
  	select HAVE_ARCH_JUMP_LABEL
  	select HAVE_ARCH_KASAN			if PPC32
+	select HAVE_ARCH_KASAN			if PPC_BOOK3S_64 && PPC_RADIX_MMU

That's probably detail, but as it is necessary to deeply define the HW when selecting that (I mean giving the exact amount of memory and with restrictions like having a wholeblock memory), should it also depend of EXPERT ?

  	select HAVE_ARCH_KASAN_VMALLOC		if PPC32
+	select HAVE_ARCH_KASAN_VMALLOC		if PPC_BOOK3S_64 && PPC_RADIX_MMU

Maybe we could have

-  	select HAVE_ARCH_KASAN_VMALLOC		if PPC32
+	select HAVE_ARCH_KASAN_VMALLOC		if HAVE_ARCH_KASAN


  	select HAVE_ARCH_KGDB
  	select HAVE_ARCH_MMAP_RND_BITS
  	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT


Christophe





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