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authorLinus Torvalds <torvalds@linux-foundation.org>2025-12-05 16:30:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2025-12-05 16:30:56 -0800
commit399ead3a6d76cbdd29a716660db5c84a314dab70 (patch)
tree21fabb627af50846eebd0aed52da7d65953b6221 /arch/um/kernel/physmem.c
parent07025b51c1149951d64804c73014499bb3564dca (diff)
parenta3209bb94b36351f11e0d9e72ac44e5dd777a069 (diff)
Merge tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg: "Apart from the usual small churn, we have - initial SMP support (only kernel) - major vDSO cleanups (and fixes for 32-bit)" * tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (33 commits) um: Disable KASAN_INLINE when STATIC_LINK is selected um: Don't rename vmap to kernel_vmap um: drivers: virtio: use string choices helper um: Always set up AT_HWCAP and AT_PLATFORM x86/um: Remove FIXADDR_USER_START and FIXADDR_USE_END um: Remove __access_ok_vsyscall() um: Remove redundant range check from __access_ok_vsyscall() um: Remove fixaddr_user_init() x86/um: Drop gate area handling x86/um: Do not inherit vDSO from host um: Split out default elf_aux_hwcap x86/um: Move ELF_PLATFORM fallback to x86-specific code um: Split out default elf_aux_platform um: Avoid circular dependency on asm-offsets in pgtable.h um: Enable SMP support on x86 asm-generic: percpu: Add assembly guard um: vdso: Remove getcpu support on x86 um: Add initial SMP support um: Define timers on a per-CPU basis um: Determine sleep based on need_resched() ...
Diffstat (limited to 'arch/um/kernel/physmem.c')
-rw-r--r--arch/um/kernel/physmem.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index af02b5f9911d..ae6ca373c261 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -105,19 +105,6 @@ int phys_mapping(unsigned long phys, unsigned long long *offset_out)
fd = physmem_fd;
*offset_out = phys;
}
- else if (phys < __pa(end_iomem)) {
- struct iomem_region *region = iomem_regions;
-
- while (region != NULL) {
- if ((phys >= region->phys) &&
- (phys < region->phys + region->size)) {
- fd = region->fd;
- *offset_out = phys - region->phys;
- break;
- }
- region = region->next;
- }
- }
return fd;
}
@@ -140,61 +127,3 @@ __uml_setup("mem=", uml_mem_setup,
" be more, and the excess, if it's ever used, will just be swapped out.\n"
" Example: mem=64M\n\n"
);
-
-__uml_setup("iomem=", parse_iomem,
-"iomem=<name>,<file>\n"
-" Configure <file> as an IO memory region named <name>.\n\n"
-);
-
-/*
- * This list is constructed in parse_iomem and addresses filled in
- * setup_iomem, both of which run during early boot. Afterwards, it's
- * unchanged.
- */
-struct iomem_region *iomem_regions;
-
-/* Initialized in parse_iomem and unchanged thereafter */
-int iomem_size;
-
-unsigned long find_iomem(char *driver, unsigned long *len_out)
-{
- struct iomem_region *region = iomem_regions;
-
- while (region != NULL) {
- if (!strcmp(region->driver, driver)) {
- *len_out = region->size;
- return region->virt;
- }
-
- region = region->next;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(find_iomem);
-
-static int setup_iomem(void)
-{
- struct iomem_region *region = iomem_regions;
- unsigned long iomem_start = high_physmem + PAGE_SIZE;
- int err;
-
- while (region != NULL) {
- err = os_map_memory((void *) iomem_start, region->fd, 0,
- region->size, 1, 1, 0);
- if (err)
- printk(KERN_ERR "Mapping iomem region for driver '%s' "
- "failed, errno = %d\n", region->driver, -err);
- else {
- region->virt = iomem_start;
- region->phys = __pa(region->virt);
- }
-
- iomem_start += region->size + PAGE_SIZE;
- region = region->next;
- }
-
- return 0;
-}
-
-__initcall(setup_iomem);