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authorChristophe Leroy <christophe.leroy@csgroup.eu>2022-06-28 16:48:57 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2022-06-29 17:04:15 +1000
commit128c1ea2f838d3031a1c475607860e4271a8e9dc (patch)
tree8a322cc1de4c04fb8c3c39e438a30b3ef01b9db4 /tools/perf/scripts/python/export-to-postgresql.py
parentb646c1f7f43c13510d519e3044c87aa32352fc1f (diff)
powerpc/64e: Move virtual memory closer to linear memory
Today nohash/64 have linear memory based at 0xc000000000000000 and virtual memory based at 0x8000000000000000. In order to implement KASAN, we need to regroup both areas. Move virtual memmory at 0xc000100000000000. This complicates a bit TLB miss handlers. Until now, memory region was easily identified with the 4 higher bits of address: - 0 ==> User - c ==> Linear Memory - 8 ==> Virtual Memory Now we need to rely on the 20 higher bits, with: - 0xxxx ==> User - c0000 ==> Linear Memory - c0001 ==> Virtual Memory Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/4b225168031449fc34fc7132f3923cc8dc54af60.1656427701.git.christophe.leroy@csgroup.eu
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