[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 2 Feb 2024 08:07:34 +0000
From: Ryan Roberts <ryan.roberts@....com>
To: Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Ard Biesheuvel <ardb@...nel.org>,
Marc Zyngier <maz@...nel.org>,
James Morse <james.morse@....com>,
Andrey Ryabinin <ryabinin.a.a@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Matthew Wilcox <willy@...radead.org>,
Mark Rutland <mark.rutland@....com>,
David Hildenbrand <david@...hat.com>,
Kefeng Wang <wangkefeng.wang@...wei.com>,
John Hubbard <jhubbard@...dia.com>,
Zi Yan <ziy@...dia.com>,
Barry Song <21cnbao@...il.com>,
Alistair Popple <apopple@...dia.com>,
Yang Shi <shy828301@...il.com>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
"Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"H. Peter Anvin" <hpa@...or.com>
Cc: Ryan Roberts <ryan.roberts@....com>,
linux-arm-kernel@...ts.infradead.org,
x86@...nel.org,
linuxppc-dev@...ts.ozlabs.org,
linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v5 03/25] mm: Make pte_next_pfn() a wrapper around pte_advance_pfn()
The goal is to be able to advance a PTE by an arbitrary number of PFNs.
So introduce a new API that takes a nr param.
We are going to remove pte_next_pfn() and replace it with
pte_advance_pfn(). As a first step, implement pte_next_pfn() as a
wrapper around pte_advance_pfn() so that we can incrementally switch the
architectures over. Once all arches are moved over, we will change all
the core-mm callers to call pte_advance_pfn() directly and remove the
wrapper.
Signed-off-by: Ryan Roberts <ryan.roberts@....com>
---
include/linux/pgtable.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 5e7eaf8f2b97..815d92dcb96b 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -214,9 +214,15 @@ static inline int pmd_dirty(pmd_t pmd)
#ifndef pte_next_pfn
+#ifndef pte_advance_pfn
+static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr)
+{
+ return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT));
+}
+#endif
static inline pte_t pte_next_pfn(pte_t pte)
{
- return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT));
+ return pte_advance_pfn(pte, 1);
}
#endif
--
2.25.1
Powered by blists - more mailing lists