linux-kernel - Re: [PATCH 3/8] x86/mm: Always tell core mm to sync kernel mappings

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Message-ID: <a271720b-1d49-4dd4-b3d2-c69879561698@intel.com>
Date: Tue, 15 Apr 2025 07:12:17 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
 bp@...en8.de, joro@...tes.org, luto@...nel.org, peterz@...radead.org,
 rick.p.edgecombe@...el.com, jgross@...e.com
Subject: Re: [PATCH 3/8] x86/mm: Always tell core mm to sync kernel mappings

On 4/15/25 01:28, Kirill A. Shutemov wrote:
>>  #define SHARED_KERNEL_PMD	(!static_cpu_has(X86_FEATURE_PTI))
>>  
>> -#define ARCH_PAGE_TABLE_SYNC_MASK	(SHARED_KERNEL_PMD ? 0 : PGTBL_PMD_MODIFIED)
>> +#define ARCH_PAGE_TABLE_SYNC_MASK	PGTBL_PMD_MODIFIED
> The new definition is the same between pgtable-2level_types.h and
> pgtable-3level_types.h.
> 
> Move it to the common pgtable_32_types.h.

Good catch, thanks. I'll add another patch to clean this up.