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Commit 3e01156d authored by Linus Walleij's avatar Linus Walleij Committed by Alex Shi
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ARM64: kasan: print memory assignment 



This prints out the virtual memory assigned to KASan in the
boot crawl along with other memory assignments, if and only
if KASan is activated.

Example dmesg from the Juno Development board:

Memory: 1691156K/2080768K available (5465K kernel code, 444K rwdata,
2160K rodata, 340K init, 217K bss, 373228K reserved, 16384K cma-reserved)
Virtual kernel memory layout:
    kasan   : 0xffffff8000000000 - 0xffffff9000000000   (    64 GB)
    vmalloc : 0xffffff9000000000 - 0xffffffbdbfff0000   (   182 GB)
    vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000   (     8 GB maximum)
              0xffffffbdc2000000 - 0xffffffbdc3fc0000   (    31 MB actual)
    fixed   : 0xffffffbffabfd000 - 0xffffffbffac00000   (    12 KB)
    PCI I/O : 0xffffffbffae00000 - 0xffffffbffbe00000   (    16 MB)
    modules : 0xffffffbffc000000 - 0xffffffc000000000   (    64 MB)
    memory  : 0xffffffc000000000 - 0xffffffc07f000000   (  2032 MB)
      .init : 0xffffffc0007f5000 - 0xffffffc00084a000   (   340 KB)
      .text : 0xffffffc000080000 - 0xffffffc0007f45b4   (  7634 KB)
      .data : 0xffffffc000850000 - 0xffffffc0008bf200   (   445 KB)

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarAndrey Ryabinin <ryabinin.a.a@gmail.com>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit ee7f881b59de4e0e0be250fd0c5d4ade3e30ec34)
Signed-off-by: default avatarAlex Shi <alex.shi@linaro.org>
parent e2ce943c

arch/arm64/mm/init.c

+6 −0
Original line number Diff line number Diff line
@@ -272,6 +272,9 @@ void __init mem_init(void) 
#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)



	pr_notice("Virtual kernel memory layout:\n"

#ifdef CONFIG_KASAN

		  "    kasan   : 0x%16lx - 0x%16lx   (%6ld GB)\n"

#endif

		  "    vmalloc : 0x%16lx - 0x%16lx   (%6ld GB)\n"

#ifdef CONFIG_SPARSEMEM_VMEMMAP

		  "    vmemmap : 0x%16lx - 0x%16lx   (%6ld GB maximum)\n"
@@ -284,6 +287,9 @@ void __init mem_init(void) 
		  "      .init : 0x%p" " - 0x%p" "   (%6ld KB)\n"

		  "      .text : 0x%p" " - 0x%p" "   (%6ld KB)\n"

		  "      .data : 0x%p" " - 0x%p" "   (%6ld KB)\n",

#ifdef CONFIG_KASAN

		  MLG(KASAN_SHADOW_START, KASAN_SHADOW_END),

#endif

		  MLG(VMALLOC_START, VMALLOC_END),

#ifdef CONFIG_SPARSEMEM_VMEMMAP

		  MLG((unsigned long)vmemmap,