From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- arch/m68k/sun3/dvma.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 arch/m68k/sun3/dvma.c (limited to 'arch/m68k/sun3/dvma.c') diff --git a/arch/m68k/sun3/dvma.c b/arch/m68k/sun3/dvma.c new file mode 100644 index 000000000..83fcae6a0 --- /dev/null +++ b/arch/m68k/sun3/dvma.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * linux/arch/m68k/sun3/dvma.c + * + * Written by Sam Creasey + * + * Sun3 IOMMU routines used for dvma accesses. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + + +static unsigned long ptelist[120]; + +static unsigned long dvma_page(unsigned long kaddr, unsigned long vaddr) +{ + unsigned long pte; + unsigned long j; + pte_t ptep; + + j = *(volatile unsigned long *)kaddr; + *(volatile unsigned long *)kaddr = j; + + ptep = pfn_pte(virt_to_pfn((void *)kaddr), PAGE_KERNEL); + pte = pte_val(ptep); +// pr_info("dvma_remap: addr %lx -> %lx pte %08lx\n", kaddr, vaddr, pte); + if(ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] != pte) { + sun3_put_pte(vaddr, pte); + ptelist[(vaddr & 0xff000) >> PAGE_SHIFT] = pte; + } + + return (vaddr + (kaddr & ~PAGE_MASK)); + +} + +int dvma_map_iommu(unsigned long kaddr, unsigned long baddr, + int len) +{ + + unsigned long end; + unsigned long vaddr; + + vaddr = dvma_btov(baddr); + + end = vaddr + len; + + while(vaddr < end) { + dvma_page(kaddr, vaddr); + kaddr += PAGE_SIZE; + vaddr += PAGE_SIZE; + } + + return 0; + +} + +void __init sun3_dvma_init(void) +{ + memset(ptelist, 0, sizeof(ptelist)); +} -- cgit v1.3.1