From: Borislav Petkov <bp@alien8.de>
To: Joerg Roedel <joro@8bytes.org>
Cc: x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
hpa@zytor.com, Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Joerg Roedel <jroedel@suse.de>, Mike Rapoport <rppt@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Brijesh Singh <brijesh.singh@amd.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/4] x86/mm/64: Flush global TLB on boot and AP bringup
Date: Tue, 26 Oct 2021 14:58:44 +0200 [thread overview]
Message-ID: <YXf7hBEbW0CmwYwz@zn.tnic> (raw)
In-Reply-To: <YXfQoO0McyPiOFwz@zn.tnic>
On Tue, Oct 26, 2021 at 11:55:44AM +0200, Borislav Petkov wrote:
> > + movq %cr4, %rcx
> > + movq %rcx, %rax
> > + xorq $X86_CR4_PGE, %rcx
> > + movq %rcx, %cr4
> > + movq %rax, %cr4
Also, I'm wondering if you could compact this even more by defining a
function toggling the PGE bit and calling it from everywhere, even from
asm.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-10-26 12:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 15:48 [PATCH v3 0/4] x86/mm: Fix some issues with using trampoline_pgd Joerg Roedel
2021-10-01 15:48 ` [PATCH v3 1/4] x86/realmode: Add comment for Global bit usage in trampline_pgd Joerg Roedel
2021-10-01 15:48 ` [PATCH v3 2/4] x86/mm/64: Flush global TLB on boot and AP bringup Joerg Roedel
2021-10-26 9:55 ` Borislav Petkov
2021-10-26 12:58 ` Borislav Petkov [this message]
2021-12-02 12:50 ` Joerg Roedel
2021-12-02 18:19 ` Borislav Petkov
2021-12-02 21:17 ` Joerg Roedel
2021-10-01 15:48 ` [PATCH v3 3/4] x86/mm: Flush global TLB when switching to trampoline page-table Joerg Roedel
2021-10-01 16:13 ` Dave Hansen
2021-10-01 17:57 ` Jörg Rödel
2021-10-27 9:58 ` Borislav Petkov
2021-12-02 12:58 ` Joerg Roedel
2021-12-02 18:26 ` Borislav Petkov
2021-10-01 15:48 ` [PATCH v3 4/4] x86/64/mm: Map all kernel memory into trampoline_pgd Joerg Roedel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YXf7hBEbW0CmwYwz@zn.tnic \
--to=bp@alien8.de \
--cc=akpm@linux-foundation.org \
--cc=brijesh.singh@amd.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=joro@8bytes.org \
--cc=jroedel@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=rppt@kernel.org \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®