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Bottomley" , Helge Deller , Juergen Gross , Stefano Stabellini , Muchun Song , Oscar Salvador , Andrew Morton , "Liam R. Howlett" , Lorenzo Stoakes , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Peter Zijlstra , Andrey Ryabinin , Pasha Tatashin , Chris Li , Kairui Song , Uladzislau Rezki , Steven Rostedt , Masami Hiramatsu , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , SJ Park , "Matthew Wilcox (Oracle)" , Jan Kara , Jason Gunthorpe , Leon Romanovsky , Miaohe Lin , Dennis Zhou , Tejun Heo , Christoph Lameter , Mike Rapoport , Johannes Weiner , ziy@nvidia.com, pfalcato@suse.de, agordeev@linux.ibm.com, ryan.roberts@arm.com, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, kasan-dev@googlegroups.com, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, damon@lists.linux.dev Subject: Re: [PATCH 2/9] mm: make hw_pte_t visible to generic PTE interfaces To: Anshuman Khandual , David Hildenbrand References: <20260806083926.1807279-1-usama.anjum@arm.com> <20260806083926.1807279-3-usama.anjum@arm.com> <7xbai2nyu6nuyr6otqv556dnphpgwaqsmvwkqwoqwbh5nvj3ns@ddy5ezgvb7w3> From: Muhammad Usama Anjum Content-Language: en-US In-Reply-To: <7xbai2nyu6nuyr6otqv556dnphpgwaqsmvwkqwoqwbh5nvj3ns@ddy5ezgvb7w3> Content-Type: text/plain; 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Include linux/pgtable_types.h from the >> headers that declare those interfaces before changing their types. >> >> For vmalloc.h, replace the direct asm/page.h include with >> linux/pgtable_types.h. The latter includes asm/page.h, so pgprot_t remains >> available. It also provides either the default alias or the opted-in >> hw_pte_t wrapper. > > Stand-alone header file updates are not ideal. Why cannot these changes be > folded in, where hw_pte_t gets used first time ever in the above mentioned > places. That's correct. This patch should be merged with the 3/9 patch. But that patch is already too much big as it was generated with the help of Coccinelle. So I kept it separate. Do you still think we should merge it as its a special case? > >> >> Signed-off-by: Muhammad Usama Anjum >> --- >> Changes since RFC v1: >> - Clarify that the header provides both generic hw_pte_t definitions. >> --- >> include/linux/page_table_check.h | 2 ++ >> include/linux/pgtable.h | 1 + >> include/linux/vmalloc.h | 2 +- >> 3 files changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h >> index 12268a32e8be1..12ee6d16ad339 100644 >> --- a/include/linux/page_table_check.h >> +++ b/include/linux/page_table_check.h >> @@ -7,6 +7,8 @@ >> #ifndef __LINUX_PAGE_TABLE_CHECK_H >> #define __LINUX_PAGE_TABLE_CHECK_H >> >> +#include >> + >> #ifdef CONFIG_PAGE_TABLE_CHECK >> #include >> >> diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h >> index 8c093c119e5a8..cf595608cc4c4 100644 >> --- a/include/linux/pgtable.h >> +++ b/include/linux/pgtable.h >> @@ -4,6 +4,7 @@ >> >> #include >> #include >> +#include >> >> #define PMD_ORDER (PMD_SHIFT - PAGE_SHIFT) >> #define PUD_ORDER (PUD_SHIFT - PAGE_SHIFT) >> diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h >> index aed121d729b01..b068e6ade4207 100644 >> --- a/include/linux/vmalloc.h >> +++ b/include/linux/vmalloc.h >> @@ -8,7 +8,7 @@ >> #include >> #include >> #include >> -#include /* pgprot_t */ >> +#include /* pgprot_t, hw_pte_t */ >> #include >> #include >> >> -- >> 2.47.3 >> -- Thanks, Usama