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charset="UTF-8" X-Rspamd-Queue-Id: 1BE67A0009 X-Rspam-User: X-Stat-Signature: wpm4e9t573t5nhkkbkr8t1xk4s7w35qu X-Rspamd-Server: rspam01 X-HE-Tag: 1687169703-462506 X-HE-Meta: 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 XoiPDQet fVtMtFRDSwFJzENjZxcqqqvhX3Hz1+rB62VrJtcHgAA5PCOt2xQfoA4QDbGCcDhsBQb+pekpKomaUzyjilxIwxrhKe0rP6eY33um3GNIelzH0leCc5calntQtbMLcHMtzHLXz9dQ+ZG5yCCLF+QF50FF2vXJ/ygfU1nEp38g418sNklBxBsaL7LhVmJlr+AWMzBY9M2xq15onyHKInYIVHaTonuGDQ4dohO5yp/u4OWfLRP58QHtntl6lyr41uT4LK0fYGHoFfh0sUJ+UlXXRzkBfq/rsUdyLMIglExDu/H8oYeJJyuQCrTHhuiOELdRzTv2z2jHz2N6L8+u8zkSW0keEoyiq60jF+1JRub3Vg9zH63i8Z5HB7kByrYhIk0Of29nrEdFHSS9Jpiz210CfLKYJkw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 19 Jun 2023 at 12:12, Chanho Min wrote: > > This patch removes description of the KASAN_HW_TAGS's memory consumption. > KASAN_HW_TAGS does not set 1/32nd shadow memory. The hardware still allocates/uses shadow in MTE. Though, it may be 1/16-th, not sure. > Signed-off-by: Chanho Min > --- > lib/Kconfig.kasan | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index fdca89c05745..5be1740234b9 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -124,8 +124,6 @@ config KASAN_HW_TAGS > Supported only on arm64 CPUs starting from ARMv8.5 and relies on > Memory Tagging Extension and Top Byte Ignore. > > - Consumes about 1/32nd of available memory. > - > May potentially introduce problems related to pointer casting and > comparison, as it embeds a tag into the top byte of each pointer. > > -- > 2.17.1 >