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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, andreas@gaisler.com,
	davem@davemloft.net, linux-mm@kvack.org,
	mm-commits@vger.kernel.org, mpe@ellerman.id.au,
	paul@crapouillou.net, peterz@infradead.org, tglx@linutronix.de,
	torvalds@linux-foundation.org, tsbogend@alpha.franken.de
Subject: [patch 17/19] powerpc/mm/highmem: use __set_pte_at() for kmap_local()
Date: Sat, 23 Jan 2021 21:02:11 -0800	[thread overview]
Message-ID: <20210124050211.iTnzvLhNR%akpm@linux-foundation.org> (raw)
In-Reply-To: <20210123210029.a7c704d0cab204683e41ad10@linux-foundation.org>

From: Thomas Gleixner <tglx@linutronix.de>
Subject: powerpc/mm/highmem: use __set_pte_at() for kmap_local()

The original PowerPC highmem mapping function used __set_pte_at() to
denote that the mapping is per CPU.  This got lost with the conversion to
the generic implementation.

Override the default map function.

Link: https://lkml.kernel.org/r/20210112170411.281464308@linutronix.de
Fixes: 47da42b27a56 ("powerpc/mm/highmem: Switch to generic kmap atomic")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/powerpc/include/asm/highmem.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/powerpc/include/asm/highmem.h~powerpc-mm-highmem-use-__set_pte_at-for-kmap_local
+++ a/arch/powerpc/include/asm/highmem.h
@@ -58,6 +58,8 @@ extern pte_t *pkmap_page_table;
 
 #define flush_cache_kmaps()	flush_cache_all()
 
+#define arch_kmap_local_set_pte(mm, vaddr, ptep, ptev)	\
+	__set_pte_at(mm, vaddr, ptep, ptev, 1)
 #define arch_kmap_local_post_map(vaddr, pteval)	\
 	local_flush_tlb_page(NULL, vaddr)
 #define arch_kmap_local_post_unmap(vaddr)	\
_

  parent reply	other threads:[~2021-01-24  5:03 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-24  5:00 incoming Andrew Morton
2021-01-24  5:00 ` [patch 01/19] x86/setup: don't remove E820_TYPE_RAM for pfn 0 Andrew Morton
2021-01-24  5:01 ` [patch 02/19] mm: fix initialization of struct page for holes in memory layout Andrew Morton
2021-01-24  5:01 ` [patch 03/19] mm: memcg/slab: optimize objcg stock draining Andrew Morton
2021-01-24  5:01 ` [patch 04/19] mm: memcg: fix memcg file_dirty numa stat Andrew Morton
2021-01-24  5:01 ` [patch 05/19] mm: fix numa stats for thp migration Andrew Morton
2021-01-24  5:01 ` [patch 06/19] mm: memcontrol: prevent starvation when writing memory.high Andrew Morton
2021-01-24 18:01   ` Shakeel Butt
2021-01-24 18:35     ` Linus Torvalds
2021-01-24  5:01 ` [patch 07/19] kasan: fix unaligned address is unhandled in kasan_remove_zero_shadow Andrew Morton
2021-01-24  5:01 ` [patch 08/19] kasan: fix incorrect arguments passing in kasan_add_zero_shadow Andrew Morton
2021-01-24  5:01 ` [patch 09/19] kasan: fix HW_TAGS boot parameters Andrew Morton
2021-01-24  5:01 ` [patch 10/19] kasan, mm: fix conflicts with init_on_alloc/free Andrew Morton
2021-01-24  5:01 ` [patch 11/19] kasan, mm: fix resetting page_alloc tags for HW_TAGS Andrew Morton
2021-01-24  5:01 ` [patch 12/19] ubsan: disable unsigned-overflow check for i386 Andrew Morton
2021-01-24  5:01 ` [patch 13/19] mm: fix page reference leak in soft_offline_page() Andrew Morton
2021-01-24  5:01 ` [patch 14/19] sparc/mm/highmem: flush cache and TLB Andrew Morton
2021-01-24  5:02 ` [patch 15/19] mm/highmem: prepare for overriding set_pte_at() Andrew Morton
2021-01-24  5:02 ` [patch 16/19] mips/mm/highmem: use set_pte() for kmap_local() Andrew Morton
2021-01-24  5:02 ` Andrew Morton [this message]
2021-01-24  5:02 ` [patch 18/19] proc_sysctl: fix oops caused by incorrect command parameters Andrew Morton
2021-01-24  5:02 ` [patch 19/19] MAINTAINERS: add a couple more files to the Clang/LLVM section Andrew Morton

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