treewide: refresh kmalloc_obj() conversionsgrafted

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 <kees+treewide@kernel.org>

1 files changed, 204 insertions, 0 deletions

diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S
new file mode 100644
index 000000000..2ee62e4b2
--- /dev/null
+++ b/arch/arm/mm/cache-v4wt.S
@@ -0,0 +1,204 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  linux/arch/arm/mm/cache-v4wt.S
+ *
+ *  Copyright (C) 1997-2002 Russell king
+ *
+ *  ARMv4 write through cache operations support.
+ *
+ *  We assume that the write buffer is not enabled.
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/cfi_types.h>
+#include <asm/assembler.h>
+#include <asm/page.h>
+#include "proc-macros.S"
+
+/*
+ * The size of one data cache line.
+ */
+#define CACHE_DLINESIZE	32
+
+/*
+ * The number of data cache segments.
+ */
+#define CACHE_DSEGMENTS	8
+
+/*
+ * The number of lines in a cache segment.
+ */
+#define CACHE_DENTRIES	64
+
+/*
+ * This is the size at which it becomes more efficient to
+ * clean the whole cache, rather than using the individual
+ * cache line maintenance instructions.
+ *
+ * *** This needs benchmarking
+ */
+#define CACHE_DLIMIT	16384
+
+/*
+ *	flush_icache_all()
+ *
+ *	Unconditionally clean and invalidate the entire icache.
+ */
+SYM_TYPED_FUNC_START(v4wt_flush_icache_all)
+	mov	r0, #0
+	mcr	p15, 0, r0, c7, c5, 0		@ invalidate I cache
+	ret	lr
+SYM_FUNC_END(v4wt_flush_icache_all)
+
+/*
+ *	flush_user_cache_all()
+ *
+ *	Invalidate all cache entries in a particular address
+ *	space.
+ */
+SYM_FUNC_ALIAS(v4wt_flush_user_cache_all, v4wt_flush_kern_cache_all)
+
+/*
+ *	flush_kern_cache_all()
+ *
+ *	Clean and invalidate the entire cache.
+ */
+SYM_TYPED_FUNC_START(v4wt_flush_kern_cache_all)
+	mov	r2, #VM_EXEC
+	mov	ip, #0
+__flush_whole_cache:
+	tst	r2, #VM_EXEC
+	mcrne	p15, 0, ip, c7, c5, 0		@ invalidate I cache
+	mcr	p15, 0, ip, c7, c6, 0		@ invalidate D cache
+	ret	lr
+SYM_FUNC_END(v4wt_flush_kern_cache_all)
+
+/*
+ *	flush_user_cache_range(start, end, flags)
+ *
+ *	Clean and invalidate a range of cache entries in the specified
+ *	address space.
+ *
+ *	- start - start address (inclusive, page aligned)
+ *	- end	- end address (exclusive, page aligned)
+ *	- flags	- vma_area_struct flags describing address space
+ */
+SYM_TYPED_FUNC_START(v4wt_flush_user_cache_range)
+	sub	r3, r1, r0			@ calculate total size
+	cmp	r3, #CACHE_DLIMIT
+	bhs	__flush_whole_cache
+
+1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
+	tst	r2, #VM_EXEC
+	mcrne	p15, 0, r0, c7, c5, 1		@ invalidate I entry
+	add	r0, r0, #CACHE_DLINESIZE
+	cmp	r0, r1
+	blo	1b
+	ret	lr
+SYM_FUNC_END(v4wt_flush_user_cache_range)
+
+/*
+ *	coherent_kern_range(start, end)
+ *
+ *	Ensure coherency between the Icache and the Dcache in the
+ *	region described by start.  If you have non-snooping
+ *	Harvard caches, you need to implement this function.
+ *
+ *	- start  - virtual start address
+ *	- end	 - virtual end address
+ */
+SYM_TYPED_FUNC_START(v4wt_coherent_kern_range)
+#ifdef CONFIG_CFI /* Fallthrough if !CFI */
+	b	v4wt_coherent_user_range
+#endif
+SYM_FUNC_END(v4wt_coherent_kern_range)
+
+/*
+ *	coherent_user_range(start, end)
+ *
+ *	Ensure coherency between the Icache and the Dcache in the
+ *	region described by start.  If you have non-snooping
+ *	Harvard caches, you need to implement this function.
+ *
+ *	- start  - virtual start address
+ *	- end	 - virtual end address
+ */
+SYM_TYPED_FUNC_START(v4wt_coherent_user_range)
+	bic	r0, r0, #CACHE_DLINESIZE - 1
+1:	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
+	add	r0, r0, #CACHE_DLINESIZE
+	cmp	r0, r1
+	blo	1b
+	mov	r0, #0
+	ret	lr
+SYM_FUNC_END(v4wt_coherent_user_range)
+
+/*
+ *	flush_kern_dcache_area(void *addr, size_t size)
+ *
+ *	Ensure no D cache aliasing occurs, either with itself or
+ *	the I cache
+ *
+ *	- addr	- kernel address
+ *	- size	- region size
+ */
+SYM_TYPED_FUNC_START(v4wt_flush_kern_dcache_area)
+	mov	r2, #0
+	mcr	p15, 0, r2, c7, c5, 0		@ invalidate I cache
+	add	r1, r0, r1
+	b	v4wt_dma_inv_range
+SYM_FUNC_END(v4wt_flush_kern_dcache_area)
+
+/*
+ *	dma_inv_range(start, end)
+ *
+ *	Invalidate (discard) the specified virtual address range.
+ *	May not write back any entries.  If 'start' or 'end'
+ *	are not cache line aligned, those lines must be written
+ *	back.
+ *
+ *	- start  - virtual start address
+ *	- end	 - virtual end address
+ */
+v4wt_dma_inv_range:
+	bic	r0, r0, #CACHE_DLINESIZE - 1
+1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
+	add	r0, r0, #CACHE_DLINESIZE
+	cmp	r0, r1
+	blo	1b
+	ret	lr
+
+/*
+ *	dma_flush_range(start, end)
+ *
+ *	Clean and invalidate the specified virtual address range.
+ *
+ *	- start  - virtual start address
+ *	- end	 - virtual end address
+*/
+SYM_TYPED_FUNC_START(v4wt_dma_flush_range)
+	b	v4wt_dma_inv_range
+SYM_FUNC_END(v4wt_dma_flush_range)
+
+/*
+ *	dma_unmap_area(start, size, dir)
+ *	- start	- kernel virtual start address
+ *	- size	- size of region
+ *	- dir	- DMA direction
+ */
+SYM_TYPED_FUNC_START(v4wt_dma_unmap_area)
+	add	r1, r1, r0
+	teq	r2, #DMA_TO_DEVICE
+	bne	v4wt_dma_inv_range
+	ret	lr
+SYM_FUNC_END(v4wt_dma_unmap_area)
+
+/*
+ *	dma_map_area(start, size, dir)
+ *	- start	- kernel virtual start address
+ *	- size	- size of region
+ *	- dir	- DMA direction
+ */
+SYM_TYPED_FUNC_START(v4wt_dma_map_area)
+	ret	lr
+SYM_FUNC_END(v4wt_dma_map_area)