linux-kernel - Re: [PATCH v5 14/23] x86/mm/cpa: Add set_direct_map

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Message-ID: <CAADWXX8yZJ9Z4yfqG9wQcb2r+0O7VCk2uQLcOU1=-BOnYhjnow@mail.gmail.com>
Date:   Fri, 26 Apr 2019 09:40:29 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Nadav Amit <namit@...are.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        lkml <linux-kernel@...r.kernel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Nadav Amit <nadav.amit@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        linux_dti@...oud.com, linux-integrity@...r.kernel.org,
        LSM List <linux-security-module@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kernel-hardening@...ts.openwall.com, Linux-MM <linux-mm@...ck.org>,
        Will Deacon <will.deacon@....com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        kristen@...ux.intel.com, deneen.t.dock@...el.com,
        Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: Re: [PATCH v5 14/23] x86/mm/cpa: Add set_direct_map_ functions

Nadav,

I get

       dmarc=fail (p=QUARANTINE sp=NONE dis=QUARANTINE) header.from=vmware.com

for these emails, because they lack the vmware DKIM signature.

It clearly did go through some vmware mail servers, but apparently not
the *right* external vmware SMTP gateway.

Please check with vmware MIS what the right SMTP setup for git-send-email is.

                 Linus

On Fri, Apr 26, 2019 at 12:32 AM Nadav Amit <namit@...are.com> wrote:
>
> From: Rick Edgecombe <rick.p.edgecombe@...el.com>
>
> Add two new functions set_direct_map_default_noflush() and
> set_direct_map_invalid_noflush() for setting the direct map alias for the
> page to its default valid permissions and to an invalid state that cannot
> be cached in a TLB, respectively. These functions do not flush the TLB.
...