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-rw-r--r--arch/um/Kconfig.um6
-rw-r--r--arch/um/defconfig1
-rw-r--r--arch/um/include/asm/dma-mapping.h112
-rw-r--r--arch/um/include/asm/pgtable.h2
-rw-r--r--arch/um/include/asm/system.h49
-rw-r--r--arch/um/kernel/dyn.lds.S14
-rw-r--r--arch/um/kernel/irq.c15
-rw-r--r--arch/um/kernel/uml.lds.S19
-rw-r--r--arch/um/os-Linux/time.c2
9 files changed, 73 insertions, 147 deletions
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index ec2b8da1aba..50d6aa20c35 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -120,6 +120,9 @@ config SMP
If you don't know what to do, say N.
+config GENERIC_HARDIRQS_NO__DO_IRQ
+ def_bool y
+
config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
@@ -147,3 +150,6 @@ config KERNEL_STACK_ORDER
This option determines the size of UML kernel stacks. They will
be 1 << order pages. The default is OK unless you're running Valgrind
on UML, in which case, set this to 3.
+
+config NO_DMA
+ def_bool y
diff --git a/arch/um/defconfig b/arch/um/defconfig
index 6bd456f96f9..564f3de65b4 100644
--- a/arch/um/defconfig
+++ b/arch/um/defconfig
@@ -566,7 +566,6 @@ CONFIG_CRC32=m
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
CONFIG_PLIST=y
-CONFIG_HAS_DMA=y
#
# SCSI device support
diff --git a/arch/um/include/asm/dma-mapping.h b/arch/um/include/asm/dma-mapping.h
deleted file mode 100644
index 1f469e80fdd..00000000000
--- a/arch/um/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,112 +0,0 @@
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#include <asm/scatterlist.h>
-
-static inline int
-dma_supported(struct device *dev, u64 mask)
-{
- BUG();
- return(0);
-}
-
-static inline int
-dma_set_mask(struct device *dev, u64 dma_mask)
-{
- BUG();
- return(0);
-}
-
-static inline void *
-dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t flag)
-{
- BUG();
- return((void *) 0);
-}
-
-static inline void
-dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t dma_handle)
-{
- BUG();
-}
-
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *cpu_addr, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
- return(0);
-}
-
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
- return(0);
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
-{
- BUG();
- return(0);
-}
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
-static inline void
-dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- BUG();
-}
-
-static inline int
-dma_mapping_error(struct device *dev, dma_addr_t dma_handle)
-{
- BUG();
- return 0;
-}
-
-#endif
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index a9f7251b4a8..41474fb5eee 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -338,9 +338,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h
index 93af1cf0907..68a90ecd145 100644
--- a/arch/um/include/asm/system.h
+++ b/arch/um/include/asm/system.h
@@ -8,23 +8,38 @@ extern int set_signals(int enable);
extern void block_signals(void);
extern void unblock_signals(void);
-#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
- (flags) = get_signals(); } while(0)
-#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
- set_signals(flags); } while(0)
-
-#define local_irq_save(flags) do { local_save_flags(flags); \
- local_irq_disable(); } while(0)
-
-#define local_irq_enable() unblock_signals()
-#define local_irq_disable() block_signals()
-
-#define irqs_disabled() \
-({ \
- unsigned long flags; \
- local_save_flags(flags); \
- (flags == 0); \
-})
+static inline unsigned long arch_local_save_flags(void)
+{
+ return get_signals();
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+ set_signals(flags);
+}
+
+static inline void arch_local_irq_enable(void)
+{
+ unblock_signals();
+}
+
+static inline void arch_local_irq_disable(void)
+{
+ block_signals();
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+ unsigned long flags;
+ flags = arch_local_save_flags();
+ arch_local_irq_disable();
+ return flags;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+ return arch_local_save_flags() == 0;
+}
extern void *_switch_to(void *prev, void *next, void *last);
#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 69268014dd8..a3cab6d3ae0 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -50,8 +50,18 @@ SECTIONS
.rela.got : { *(.rela.got) }
.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
- .rel.plt : { *(.rel.plt) }
- .rela.plt : { *(.rela.plt) }
+ .rel.plt : {
+ *(.rel.plt)
+ PROVIDE_HIDDEN(__rel_iplt_start = .);
+ *(.rel.iplt)
+ PROVIDE_HIDDEN(__rel_iplt_end = .);
+ }
+ .rela.plt : {
+ *(.rela.plt)
+ PROVIDE_HIDDEN(__rela_iplt_start = .);
+ *(.rela.iplt)
+ PROVIDE_HIDDEN(__rela_iplt_end = .);
+ }
.init : {
KEEP (*(.init))
} =0x90909090
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index a746e3037a5..3f0ac9e0c96 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -334,7 +334,7 @@ unsigned int do_IRQ(int irq, struct uml_pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs((struct pt_regs *)regs);
irq_enter();
- __do_IRQ(irq);
+ generic_handle_irq(irq);
irq_exit();
set_irq_regs(old_regs);
return 1;
@@ -391,17 +391,10 @@ void __init init_IRQ(void)
{
int i;
- irq_desc[TIMER_IRQ].status = IRQ_DISABLED;
- irq_desc[TIMER_IRQ].action = NULL;
- irq_desc[TIMER_IRQ].depth = 1;
- irq_desc[TIMER_IRQ].chip = &SIGVTALRM_irq_type;
- enable_irq(TIMER_IRQ);
+ set_irq_chip_and_handler(TIMER_IRQ, &SIGVTALRM_irq_type, handle_edge_irq);
+
for (i = 1; i < NR_IRQS; i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = NULL;
- irq_desc[i].depth = 1;
- irq_desc[i].chip = &normal_irq_type;
- enable_irq(i);
+ set_irq_chip_and_handler(i, &normal_irq_type, handle_edge_irq);
}
}
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index ec637855067..fbd99402d4d 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -22,7 +22,7 @@ SECTIONS
_text = .;
_stext = .;
__init_begin = .;
- INIT_TEXT_SECTION(PAGE_SIZE)
+ INIT_TEXT_SECTION(0)
. = ALIGN(PAGE_SIZE);
.text :
@@ -43,6 +43,23 @@ SECTIONS
__syscall_stub_end = .;
}
+ /*
+ * These are needed even in a static link, even if they wind up being empty.
+ * Newer glibc needs these __rel{,a}_iplt_{start,end} symbols.
+ */
+ .rel.plt : {
+ *(.rel.plt)
+ PROVIDE_HIDDEN(__rel_iplt_start = .);
+ *(.rel.iplt)
+ PROVIDE_HIDDEN(__rel_iplt_end = .);
+ }
+ .rela.plt : {
+ *(.rela.plt)
+ PROVIDE_HIDDEN(__rela_iplt_start = .);
+ *(.rela.iplt)
+ PROVIDE_HIDDEN(__rela_iplt_end = .);
+ }
+
#include "asm/common.lds.S"
init.data : { INIT_DATA }
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index dec5678fc17..6e3359d6a83 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -60,7 +60,7 @@ static inline long long timeval_to_ns(const struct timeval *tv)
long long disable_timer(void)
{
struct itimerval time = ((struct itimerval) { { 0, 0 }, { 0, 0 } });
- int remain, max = UM_NSEC_PER_SEC / UM_HZ;
+ long long remain, max = UM_NSEC_PER_SEC / UM_HZ;
if (setitimer(ITIMER_VIRTUAL, &time, &time) < 0)
printk(UM_KERN_ERR "disable_timer - setitimer failed, "
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 23:10:47 +0000