Automatic merge of 'master' into merge (2024-09-19 22:59)

linuxppc · Sep 19, 2024 · f2e1230 · f2e1230
2 parents 816d439 + 3a7101e
commit f2e1230
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diff --git a/Documentation/filesystems/overlayfs.rst b/Documentation/filesystems/overlayfs.rst
@@ -367,8 +367,11 @@ Metadata only copy up
 
 When the "metacopy" feature is enabled, overlayfs will only copy
 up metadata (as opposed to whole file), when a metadata specific operation
-like chown/chmod is performed. Full file will be copied up later when
-file is opened for WRITE operation.
+like chown/chmod is performed. An upper file in this state is marked with
+"trusted.overlayfs.metacopy" xattr which indicates that the upper file
+contains no data.  The data will be copied up later when file is opened for
+WRITE operation.  After the lower file's data is copied up,
+the "trusted.overlayfs.metacopy" xattr is removed from the upper file.
 
 In other words, this is delayed data copy up operation and data is copied
 up when there is a need to actually modify data.

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
@@ -72,7 +72,7 @@ config PARISC
 	select GENERIC_SCHED_CLOCK
 	select GENERIC_IRQ_MIGRATION if SMP
 	select HAVE_UNSTABLE_SCHED_CLOCK if SMP
-	select LEGACY_TIMER_TICK
+	select GENERIC_CLOCKEVENTS
 	select CPU_NO_EFFICIENT_FFS
 	select THREAD_INFO_IN_TASK
 	select NEED_DMA_MAP_STATE

diff --git a/arch/parisc/include/asm/mman.h b/arch/parisc/include/asm/mman.h
@@ -11,4 +11,18 @@ static inline bool arch_memory_deny_write_exec_supported(void)
 }
 #define arch_memory_deny_write_exec_supported arch_memory_deny_write_exec_supported
 
+static inline unsigned long arch_calc_vm_flag_bits(unsigned long flags)
+{
+	/*
+	 * The stack on parisc grows upwards, so if userspace requests memory
+	 * for a stack, mark it with VM_GROWSUP so that the stack expansion in
+	 * the fault handler will work.
+	 */
+	if (flags & MAP_STACK)
+		return VM_GROWSUP;
+
+	return 0;
+}
+#define arch_calc_vm_flag_bits(flags) arch_calc_vm_flag_bits(flags)
+
 #endif /* __ASM_MMAN_H__ */
diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
@@ -298,7 +298,7 @@ extern unsigned int toc_handler_csum;
 extern void do_cpu_irq_mask(struct pt_regs *);
 extern irqreturn_t timer_interrupt(int, void *);
 extern irqreturn_t ipi_interrupt(int, void *);
-extern void start_cpu_itimer(void);
+extern void parisc_clockevent_init(void);
 extern void handle_interruption(int, struct pt_regs *);
 
 /* called from assembly code: */

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
@@ -1051,17 +1051,15 @@ ENTRY_CFI(intr_save)		/* for os_hpmc */
 	STREG           %r16, PT_ISR(%r29)
 	STREG           %r17, PT_IOR(%r29)
 
-#if 0 && defined(CONFIG_64BIT)
-	/* Revisit when we have 64-bit code above 4Gb */
+#if defined(CONFIG_64BIT)
 	b,n		intr_save2
 
 skip_save_ior:
 	/* We have a itlb miss, and when executing code above 4 Gb on ILP64, we
 	 * need to adjust iasq/iaoq here in the same way we adjusted isr/ior
 	 * above.
 	 */
-	extrd,u,*	%r8,PSW_W_BIT,1,%r1
-	cmpib,COND(=),n	1,%r1,intr_save2
+	bb,COND(>=),n	%r8,PSW_W_BIT,intr_save2
 	LDREG		PT_IASQ0(%r29), %r16
 	LDREG		PT_IAOQ0(%r29), %r17
 	/* adjust iasq/iaoq */

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
@@ -297,7 +297,7 @@ smp_cpu_init(int cpunum)
 	enter_lazy_tlb(&init_mm, current);
 
 	init_IRQ();   /* make sure no IRQs are enabled or pending */
-	start_cpu_itimer();
+	parisc_clockevent_init();
 }
 
 

diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
@@ -243,10 +243,10 @@ linux_gateway_entry:
 
 #ifdef CONFIG_64BIT
 	ldil	L%sys_call_table, %r1
-	or,=	%r2,%r2,%r2
-	addil	L%(sys_call_table64-sys_call_table), %r1
+	or,ev	%r2,%r2,%r2
+	ldil	L%sys_call_table64, %r1
 	ldo	R%sys_call_table(%r1), %r19
-	or,=	%r2,%r2,%r2
+	or,ev	%r2,%r2,%r2
 	ldo	R%sys_call_table64(%r1), %r19
 #else
 	load32	sys_call_table, %r19
@@ -379,10 +379,10 @@ tracesys_next:
 	extrd,u	%r19,63,1,%r2			/* W hidden in bottom bit */
 
 	ldil	L%sys_call_table, %r1
-	or,=	%r2,%r2,%r2
-	addil	L%(sys_call_table64-sys_call_table), %r1
+	or,ev	%r2,%r2,%r2
+	ldil	L%sys_call_table64, %r1
 	ldo	R%sys_call_table(%r1), %r19
-	or,=	%r2,%r2,%r2
+	or,ev	%r2,%r2,%r2
 	ldo	R%sys_call_table64(%r1), %r19
 #else
 	load32	sys_call_table, %r19
@@ -1327,6 +1327,8 @@ ENTRY(sys_call_table)
 END(sys_call_table)
 
 #ifdef CONFIG_64BIT
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
 	.align 8
 ENTRY(sys_call_table64)
 #include <asm/syscall_table_64.h>    /* 64-bit syscalls */