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/kernel/irq.c b/arch/x86/kernel/irq.c
index 21efee3..ce904c8 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -13,12 +13,14 @@
#include <linux/export.h>
#include <linux/irq.h>
+#include <asm/irq_stack.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
#include <asm/irq.h>
#include <asm/mce.h>
#include <asm/hw_irq.h>
#include <asm/desc.h>
+#include <asm/traps.h>
#define CREATE_TRACE_POINTS
#include <asm/trace/irq_vectors.h>
@@ -26,9 +28,6 @@
DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
EXPORT_PER_CPU_SYMBOL(irq_stat);
-DEFINE_PER_CPU(struct pt_regs *, irq_regs);
-EXPORT_PER_CPU_SYMBOL(irq_regs);
-
atomic_t irq_err_count;
/*
@@ -224,35 +223,35 @@
return sum;
}
+static __always_inline void handle_irq(struct irq_desc *desc,
+ struct pt_regs *regs)
+{
+ if (IS_ENABLED(CONFIG_X86_64))
+ run_irq_on_irqstack_cond(desc->handle_irq, desc, regs);
+ else
+ __handle_irq(desc, regs);
+}
/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
+ * common_interrupt() handles all normal device IRQ's (the special SMP
+ * cross-CPU interrupts have their own entry points).
*/
-__visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
+DEFINE_IDTENTRY_IRQ(common_interrupt)
{
struct pt_regs *old_regs = set_irq_regs(regs);
- struct irq_desc * desc;
- /* high bit used in ret_from_ code */
- unsigned vector = ~regs->orig_ax;
+ struct irq_desc *desc;
- entering_irq();
-
- /* entering_irq() tells RCU that we're not quiescent. Check it. */
+ /* entry code tells RCU that we're not quiescent. Check it. */
RCU_LOCKDEP_WARN(!rcu_is_watching(), "IRQ failed to wake up RCU");
desc = __this_cpu_read(vector_irq[vector]);
if (likely(!IS_ERR_OR_NULL(desc))) {
- if (IS_ENABLED(CONFIG_X86_32))
- handle_irq(desc, regs);
- else
- generic_handle_irq_desc(desc);
+ handle_irq(desc, regs);
} else {
ack_APIC_irq();
if (desc == VECTOR_UNUSED) {
- pr_emerg_ratelimited("%s: %d.%d No irq handler for vector\n",
+ pr_emerg_ratelimited("%s: %d.%u No irq handler for vector\n",
__func__, smp_processor_id(),
vector);
} else {
@@ -260,10 +259,7 @@
}
}
- exiting_irq();
-
set_irq_regs(old_regs);
- return 1;
}
#ifdef CONFIG_X86_LOCAL_APIC
@@ -272,17 +268,16 @@
/*
* Handler for X86_PLATFORM_IPI_VECTOR.
*/
-__visible void __irq_entry smp_x86_platform_ipi(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_x86_platform_ipi)
{
struct pt_regs *old_regs = set_irq_regs(regs);
- entering_ack_irq();
+ ack_APIC_irq();
trace_x86_platform_ipi_entry(X86_PLATFORM_IPI_VECTOR);
inc_irq_stat(x86_platform_ipis);
if (x86_platform_ipi_callback)
x86_platform_ipi_callback();
trace_x86_platform_ipi_exit(X86_PLATFORM_IPI_VECTOR);
- exiting_irq();
set_irq_regs(old_regs);
}
#endif
@@ -295,49 +290,39 @@
{
if (handler)
kvm_posted_intr_wakeup_handler = handler;
- else
+ else {
kvm_posted_intr_wakeup_handler = dummy_handler;
+ synchronize_rcu();
+ }
}
EXPORT_SYMBOL_GPL(kvm_set_posted_intr_wakeup_handler);
/*
* Handler for POSTED_INTERRUPT_VECTOR.
*/
-__visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_ipi)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- entering_ack_irq();
+ ack_APIC_irq();
inc_irq_stat(kvm_posted_intr_ipis);
- exiting_irq();
- set_irq_regs(old_regs);
}
/*
* Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
*/
-__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_kvm_posted_intr_wakeup_ipi)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- entering_ack_irq();
+ ack_APIC_irq();
inc_irq_stat(kvm_posted_intr_wakeup_ipis);
kvm_posted_intr_wakeup_handler();
- exiting_irq();
- set_irq_regs(old_regs);
}
/*
* Handler for POSTED_INTERRUPT_NESTED_VECTOR.
*/
-__visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_nested_ipi)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- entering_ack_irq();
+ ack_APIC_irq();
inc_irq_stat(kvm_posted_intr_nested_ipis);
- exiting_irq();
- set_irq_regs(old_regs);
}
#endif