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

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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()
This commit is contained in:
Linus Torvalds
2025-09-26 14:39:12 -07:00
parent d4df17482e e24108012c
commit fec734e8d5
2 changed files with 21 additions and 4 deletions
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8
MAINTAINERS
View File

@@ -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

17
arch/riscv/include/asm/pgtable.h
View File

@@ -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));