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Message-ID: <b01b4506-eb8e-4070-b318-bad68caf534f@intel.com>
Date: Fri, 23 Feb 2024 10:58:55 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
x86@...nel.org
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>,
Elena Reshetova <elena.reshetova@...el.com>,
Jun Nakajima <jun.nakajima@...el.com>,
Rick Edgecombe <rick.p.edgecombe@...el.com>,
Tom Lendacky <thomas.lendacky@....com>, "Kalra, Ashish"
<ashish.kalra@....com>, Sean Christopherson <seanjc@...gle.com>,
"Huang, Kai" <kai.huang@...el.com>, Baoquan He <bhe@...hat.com>,
kexec@...ts.infradead.org, linux-coco@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: Re: [PATCHv7 07/16] x86/mm: Return correct level from
lookup_address() if pte is none
On 2/23/24 10:45, Dave Hansen wrote:
> Always filling out the level allows using lookup_address() to
> iterate over kernel page tables.
This doesn't parse very well. How about this instead:
Always filling out the level allows using lookup_address() to
precisely skip over holes when walking kernel page tables.
I think that more accurately captures what you're doing with it in the
next patch.
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