From: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
"Mike Rapoport (Microsoft)" <rppt@kernel.org>,
akpm@linux-foundation.org,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v5 4/4] x86/mm/pat: Convert split_large_page() to use ptdescs
Date: Wed, 11 Feb 2026 14:38:52 -0800 [thread overview]
Message-ID: <aY0E_EKc_yx_mPS7@fedora> (raw)
In-Reply-To: <aYz7t7vG2W8ieEgx@casper.infradead.org>
On Wed, Feb 11, 2026 at 09:59:19PM +0000, Matthew Wilcox wrote:
> On Wed, Feb 11, 2026 at 11:52:33AM -0800, Vishal Moola (Oracle) wrote:
> > static int
> > __split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address,
> > - struct page *base)
> > + struct ptdesc *ptdesc)
> > {
> > unsigned long lpaddr, lpinc, ref_pfn, pfn, pfninc = 1;
> > + struct page *base = ptdesc_page(ptdesc);
> > pte_t *pbase = (pte_t *)page_address(base);
>
> We have ptdesc_address() already. Can we avoid the other uses of
> 'base' in this function?
We could, but not without helpers similar to folio_pfn() and
folio_mk_pte(). I hadn't added those in this patchset since my primary
goal right now is to ensure all the allocation/free sites are using the
proper apis.
prev parent reply other threads:[~2026-02-11 22:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-11 19:52 [PATCH v5 0/4] Convert 64-bit x86/mm/pat to ptdescs Vishal Moola (Oracle)
2026-02-11 19:52 ` [PATCH v5 1/4] mm: Add address apis for ptdescs Vishal Moola (Oracle)
2026-02-11 20:13 ` Dave Hansen
2026-02-11 21:54 ` Matthew Wilcox
2026-02-11 22:18 ` Vishal Moola (Oracle)
2026-02-12 0:07 ` Vishal Moola (Oracle)
2026-02-18 20:23 ` Vishal Moola (Oracle)
2026-02-18 20:27 ` Dave Hansen
2026-02-11 19:52 ` [PATCH v5 2/4] x86/mm/pat: Convert pte code to use ptdescs Vishal Moola (Oracle)
2026-02-11 21:55 ` Matthew Wilcox
2026-02-11 22:23 ` Vishal Moola (Oracle)
2026-02-11 23:04 ` Dave Hansen
2026-02-11 19:52 ` [PATCH v5 3/4] x86/mm/pat: Convert pmd " Vishal Moola (Oracle)
2026-02-11 20:07 ` Dave Hansen
2026-02-11 21:45 ` Vishal Moola (Oracle)
2026-02-11 19:52 ` [PATCH v5 4/4] x86/mm/pat: Convert split_large_page() " Vishal Moola (Oracle)
2026-02-11 21:59 ` Matthew Wilcox
2026-02-11 22:38 ` Vishal Moola (Oracle) [this message]
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