Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index 8a0e56e..8c86ede 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -9,7 +9,7 @@
#include <asm/nospec-branch.h>
/* Provide __cpuidle; we can't safely include <linux/cpu.h> */
-#define __cpuidle __attribute__((__section__(".cpuidle.text")))
+#define __cpuidle __section(".cpuidle.text")
/*
* Interrupt control:
@@ -17,7 +17,7 @@
/* Declaration required for gcc < 4.9 to prevent -Werror=missing-prototypes */
extern inline unsigned long native_save_fl(void);
-extern inline unsigned long native_save_fl(void)
+extern __always_inline unsigned long native_save_fl(void)
{
unsigned long flags;
@@ -44,12 +44,12 @@
:"memory", "cc");
}
-static inline void native_irq_disable(void)
+static __always_inline void native_irq_disable(void)
{
asm volatile("cli": : :"memory");
}
-static inline void native_irq_enable(void)
+static __always_inline void native_irq_enable(void)
{
asm volatile("sti": : :"memory");
}
@@ -74,22 +74,22 @@
#ifndef __ASSEMBLY__
#include <linux/types.h>
-static inline notrace unsigned long arch_local_save_flags(void)
+static __always_inline unsigned long arch_local_save_flags(void)
{
return native_save_fl();
}
-static inline notrace void arch_local_irq_restore(unsigned long flags)
+static __always_inline void arch_local_irq_restore(unsigned long flags)
{
native_restore_fl(flags);
}
-static inline notrace void arch_local_irq_disable(void)
+static __always_inline void arch_local_irq_disable(void)
{
native_irq_disable();
}
-static inline notrace void arch_local_irq_enable(void)
+static __always_inline void arch_local_irq_enable(void)
{
native_irq_enable();
}
@@ -115,7 +115,7 @@
/*
* For spinlocks, etc:
*/
-static inline notrace unsigned long arch_local_irq_save(void)
+static __always_inline unsigned long arch_local_irq_save(void)
{
unsigned long flags = arch_local_save_flags();
arch_local_irq_disable();
@@ -131,18 +131,6 @@
#define SAVE_FLAGS(x) pushfq; popq %rax
#endif
-#define SWAPGS swapgs
-/*
- * Currently paravirt can't handle swapgs nicely when we
- * don't have a stack we can rely on (such as a user space
- * stack). So we either find a way around these or just fault
- * and emulate if a guest tries to call swapgs directly.
- *
- * Either way, this is a good way to document that we don't
- * have a reliable stack. x86_64 only.
- */
-#define SWAPGS_UNSAFE_STACK swapgs
-
#define INTERRUPT_RETURN jmp native_iret
#define USERGS_SYSRET64 \
swapgs; \
@@ -159,51 +147,25 @@
#endif /* CONFIG_PARAVIRT_XXL */
#ifndef __ASSEMBLY__
-static inline int arch_irqs_disabled_flags(unsigned long flags)
+static __always_inline int arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & X86_EFLAGS_IF);
}
-static inline int arch_irqs_disabled(void)
+static __always_inline int arch_irqs_disabled(void)
{
unsigned long flags = arch_local_save_flags();
return arch_irqs_disabled_flags(flags);
}
+#else
+#ifdef CONFIG_X86_64
+#ifdef CONFIG_XEN_PV
+#define SWAPGS ALTERNATIVE "swapgs", "", X86_FEATURE_XENPV
+#else
+#define SWAPGS swapgs
+#endif
+#endif
#endif /* !__ASSEMBLY__ */
-#ifdef __ASSEMBLY__
-#ifdef CONFIG_TRACE_IRQFLAGS
-# define TRACE_IRQS_ON call trace_hardirqs_on_thunk;
-# define TRACE_IRQS_OFF call trace_hardirqs_off_thunk;
-#else
-# define TRACE_IRQS_ON
-# define TRACE_IRQS_OFF
-#endif
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_X86_64
-# define LOCKDEP_SYS_EXIT call lockdep_sys_exit_thunk
-# define LOCKDEP_SYS_EXIT_IRQ \
- TRACE_IRQS_ON; \
- sti; \
- call lockdep_sys_exit_thunk; \
- cli; \
- TRACE_IRQS_OFF;
-# else
-# define LOCKDEP_SYS_EXIT \
- pushl %eax; \
- pushl %ecx; \
- pushl %edx; \
- call lockdep_sys_exit; \
- popl %edx; \
- popl %ecx; \
- popl %eax;
-# define LOCKDEP_SYS_EXIT_IRQ
-# endif
-#else
-# define LOCKDEP_SYS_EXIT
-# define LOCKDEP_SYS_EXIT_IRQ
-#endif
-#endif /* __ASSEMBLY__ */
-
#endif