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Re: [Qemu-devel] Help on TLB Flush

From: Peter Maydell
Subject: Re: [Qemu-devel] Help on TLB Flush
Date: Thu, 12 Feb 2015 14:58:19 +0000

On 12 February 2015 at 14:45, Alexander Graf <address@hidden> wrote:
> almost nobody except x86 does global flushes

All ARM TLB maintenance operations have both "this CPU only"
and "all TLBs in the Inner Shareable domain" [that's ARM-speak
for "every CPU core in the cluster"] variants (the latter
being the TLB *IS operations). Looking at Linux's
arch/arm64/mm/tlb.S and arch/arm64/include/asm/tlbflush.h
most of the operations defined there use the IS variants.

-- PMM

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