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Date: Mon, 20 Apr 2020 14:21:14 -0700
From: Sami Tolvanen <samitolvanen@...gle.com>
To: Will Deacon <will@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>,
James Morse <james.morse@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Masahiro Yamada <masahiroy@...nel.org>,
Michal Marek <michal.lkml@...kovi.net>,
Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dave Martin <Dave.Martin@....com>,
Kees Cook <keescook@...omium.org>,
Laura Abbott <labbott@...hat.com>, Marc Zyngier <maz@...nel.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Jann Horn <jannh@...gle.com>,
Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
clang-built-linux@...glegroups.com,
kernel-hardening@...ts.openwall.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v11 02/12] scs: add accounting
On Mon, Apr 20, 2020 at 06:17:55PM +0100, Will Deacon wrote:
> > +#ifdef CONFIG_SHADOW_CALL_STACK
> > + nid, sum_zone_node_page_state(nid, NR_KERNEL_SCS_BYTES) / 1024,
> > +#endif
>
> Why not just use KB everywhere instead of repeated division by 1024?
This was to correctly calculate memory usage with shadow stacks <1024
bytes. I don't think we need that anymore, so I'll change this to _KB in
the next version.
Sami
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