[merged] arm-arm64-add-support-for-folded-p4d-page-tables-fix.patch removed from -mm tree

[merged] arm-arm64-add-support-for-folded-p4d-page-tables-fix.patch removed from -mm tree

[akpm]

The patch titled
     Subject: arm64/mm: implement unmap_hotplug_p4d_range
has been removed from the -mm tree.  Its filename was
     arm-arm64-add-support-for-folded-p4d-page-tables-fix.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Mike Rapoport <rppt@linux.ibm.com>
Subject: arm64/mm: implement unmap_hotplug_p4d_range

Link: http://lkml.kernel.org/r/20200302135443.GA24831@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: James Morse <james.morse@arm.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stephen Rothwell<sfr@canb.auug.org.au>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arm64/mm/mmu.c |   20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

--- a/arch/arm64/mm/mmu.c~arm-arm64-add-support-for-folded-p4d-page-tables-fix
+++ a/arch/arm64/mm/mmu.c
@@ -848,6 +848,24 @@ static void unmap_hotplug_pud_range(pgd_
 	} while (addr = next, addr < end);
 }
 
+static void unmap_hotplug_p4d_range(pgd_t *pgd, unsigned long addr,
+				unsigned long end, bool free_mapped)
+{
+	unsigned long next;
+	pgd_t *p4dp, p4d;
+
+	do {
+		next = p4d_addr_end(addr, end);
+		p4dp = p4d_offset(pgd, addr);
+		p4d = READ_ONCE(*p4dp);
+		if (p4d_none(p4d))
+			continue;
+
+		WARN_ON(!p4d_present(p4d));
+		unmap_hotplug_pud_range(p4dp, addr, next, free_mapped);
+	} while (addr = next, addr < end);
+}
+
 static void unmap_hotplug_range(unsigned long addr, unsigned long end,
 				bool free_mapped)
 {
@@ -862,7 +880,7 @@ static void unmap_hotplug_range(unsigned
 			continue;
 
 		WARN_ON(!pgd_present(pgd));
-		unmap_hotplug_pud_range(pgdp, addr, next, free_mapped);
+		unmap_hotplug_p4d_range(pgdp, addr, next, free_mapped);
 	} while (addr = next, addr < end);
 }
 
_

Patches currently in -mm which might be from rppt@linux.ibm.com are