Merge tag 'riscv-for-linus-v6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Paul Walmsley:

 - A race-free implementation of pudp_huge_get_and_clear() (based on the
   x86 code)

 - A MAINTAINERS update to my E-mail address

* tag 'riscv-for-linus-v6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  MAINTAINERS: Update Paul Walmsley's E-mail address
  riscv: Use an atomic xchg in pudp_huge_get_and_clear()

Author: torvalds

MAINTAINERS

@@ -1772,7 +1772,7 @@ F:	drivers/staging/iio/*/ad*
 X:	drivers/iio/*/adjd*
 
 ANALOGBITS PLL LIBRARIES
-M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Paul Walmsley <pjw@kernel.org>
 M:	Samuel Holland <samuel.holland@sifive.com>
 S:	Supported
 F:	drivers/clk/analogbits/*
@@ -19296,7 +19296,7 @@ S:	Maintained
 F:	drivers/pci/controller/dwc/*layerscape*
 
 PCI DRIVER FOR FU740
-M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Paul Walmsley <pjw@kernel.org>
 M:	Greentime Hu <greentime.hu@sifive.com>
 M:	Samuel Holland <samuel.holland@sifive.com>
 L:	linux-pci@vger.kernel.org
@@ -21656,7 +21656,7 @@ F:	Documentation/devicetree/bindings/timer/andestech,plmt0.yaml
 F:	arch/riscv/boot/dts/andes/
 
 RISC-V ARCHITECTURE
-M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Paul Walmsley <pjw@kernel.org>
 M:	Palmer Dabbelt <palmer@dabbelt.com>
 M:	Albert Ou <aou@eecs.berkeley.edu>
 R:	Alexandre Ghiti <alex@ghiti.fr>
@@ -23108,7 +23108,7 @@ S:	Maintained
 F:	drivers/watchdog/simatic-ipc-wdt.c
 
 SIFIVE DRIVERS
-M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Paul Walmsley <pjw@kernel.org>
 M:	Samuel Holland <samuel.holland@sifive.com>
 L:	linux-riscv@lists.infradead.org
 S:	Supported

arch/riscv/include/asm/pgtable.h

@@ -942,6 +942,23 @@ static inline int pudp_test_and_clear_young(struct vm_area_struct *vma,
 	return ptep_test_and_clear_young(vma, address, (pte_t *)pudp);
 }
 
+#define __HAVE_ARCH_PUDP_HUGE_GET_AND_CLEAR
+static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm,
+					    unsigned long address,  pud_t *pudp)
+{
+#ifdef CONFIG_SMP
+	pud_t pud = __pud(xchg(&pudp->pud, 0));
+#else
+	pud_t pud = *pudp;
+
+	pud_clear(pudp);
+#endif
+
+	page_table_check_pud_clear(mm, pud);
+
+	return pud;
+}
+
 static inline int pud_young(pud_t pud)
 {
 	return pte_young(pud_pte(pud));