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[67.164.59.41]) by smtp.googlemail.com with ESMTPSA id 5a478bee46e88-2ba9dcfe6b7sm2426463eec.29.2026.02.11.11.52.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Feb 2026 11:52:47 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, "Mike Rapoport (Microsoft)" Cc: akpm@linux-foundation.org, "Matthew Wilcox (Oracle)" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , "Vishal Moola (Oracle)" Subject: [PATCH v5 2/4] x86/mm/pat: Convert pte code to use ptdescs Date: Wed, 11 Feb 2026 11:52:31 -0800 Message-ID: <20260211195233.368497-3-vishal.moola@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260211195233.368497-1-vishal.moola@gmail.com> References: <20260211195233.368497-1-vishal.moola@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We need all allocation and free sites to use the ptdesc APIs in order to allocate them separately from regular pages. Convert these pte allocation/free sites to use ptdescs. Also, rename *_pte_page() functions to *_pte(). Rename them now to avoid any confusion later. Eventually these allocations will be backed by a ptdesc not a page, but that's not important to callers either. Signed-off-by: Vishal Moola (Oracle) --- arch/x86/mm/pat/set_memory.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 6c6eb486f7a6..04eae65aedfc 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -1400,7 +1400,7 @@ static int collapse_large_pages(unsigned long addr, s= truct list_head *pgtables) return collapsed; } =20 -static bool try_to_free_pte_page(pte_t *pte) +static bool try_to_free_pte(pte_t *pte) { int i; =20 @@ -1408,7 +1408,7 @@ static bool try_to_free_pte_page(pte_t *pte) if (!pte_none(pte[i])) return false; =20 - free_page((unsigned long)pte); + pgtable_free_addr(pte); return true; } =20 @@ -1435,7 +1435,7 @@ static bool unmap_pte_range(pmd_t *pmd, unsigned long= start, unsigned long end) pte++; } =20 - if (try_to_free_pte_page((pte_t *)pmd_page_vaddr(*pmd))) { + if (try_to_free_pte((pte_t *)pmd_page_vaddr(*pmd))) { pmd_clear(pmd); return true; } @@ -1537,9 +1537,9 @@ static void unmap_pud_range(p4d_t *p4d, unsigned long= start, unsigned long end) */ } =20 -static int alloc_pte_page(pmd_t *pmd) +static int alloc_pte(pmd_t *pmd) { - pte_t *pte =3D (pte_t *)get_zeroed_page(GFP_KERNEL); + pte_t *pte =3D pgtable_alloc_addr(GFP_KERNEL, 0); if (!pte) return -1; =20 @@ -1600,7 +1600,7 @@ static long populate_pmd(struct cpa_data *cpa, */ pmd =3D pmd_offset(pud, start); if (pmd_none(*pmd)) - if (alloc_pte_page(pmd)) + if (alloc_pte(pmd)) return -1; =20 populate_pte(cpa, start, pre_end, cur_pages, pmd, pgprot); @@ -1641,7 +1641,7 @@ static long populate_pmd(struct cpa_data *cpa, if (start < end) { pmd =3D pmd_offset(pud, start); if (pmd_none(*pmd)) - if (alloc_pte_page(pmd)) + if (alloc_pte(pmd)) return -1; =20 populate_pte(cpa, start, end, num_pages - cur_pages, --=20 2.52.0