linux-kernel - Re: [PATCH v2 10/10] x86/mm: Try to preserve old TLB entries using PCID

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Message-Id: <63A46FD8-1F25-4CE2-8C0C-6E57ECB9470C@gmail.com>
Date:   Mon, 19 Jun 2017 16:04:41 -0700
From:   Nadav Amit <nadav.amit@...il.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     X86 ML <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Rik van Riel <riel@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v2 10/10] x86/mm: Try to preserve old TLB entries using
 PCID

Nadav Amit <nadav.amit@...il.com> wrote:

>> 
> Just to clarify: I asked since I don’t understand how the interaction with
> PCID-unaware CR3 users go. Specifically, IIUC, arch_efi_call_virt_teardown()
> can reload CR3 with an old PCID value. No?

Please ignore this email. I realized it is not a problem.

Nadav