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Date:   Fri, 15 Nov 2019 15:31:14 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Tom Lendacky <thomas.lendacky@amd.com>
Cc:     "Kirill A. Shutemov" <kirill@shutemov.name>,
        Dan Williams <dan.j.williams@intel.com>,
        Mike Rapoport <rppt@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Alexey Dobriyan <adobriyan@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        James Bottomley <jejb@linux.ibm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Linux API <linux-api@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>,
        the arch/x86 maintainers <x86@kernel.org>,
        Mike Rapoport <rppt@linux.ibm.com>
Subject: Re: AMD TLB errata, (Was: [PATCH RFC] mm: add MAP_EXCLUSIVE to
 create exclusive user mappings)
Message-ID: <20191115143114.GN4131@hirez.programming.kicks-ass.net>
References: <1572171452-7958-2-git-send-email-rppt@kernel.org>
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 <20191029110024.yjytp22lhd2vekrv@box>
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On Fri, Nov 15, 2019 at 08:12:52AM -0600, Tom Lendacky wrote:
> I talked with some of the hardware folks and if you maintain the same bits
> in the large and small pages (aside from the large page bit) until the
> flush, then the errata should not occur.

Excellent!

Thanks for digging that out Tom.