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Merge branches 'core-objtool-for-linus', 'x86-cleanups-for-linus' and 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 objtool, cleanup, and apic updates from Ingo Molnar:
 "Objtool:

   - Fix a gawk 5.0 incompatibility in gen-insn-attr-x86.awk. Most
     distros are still on gawk 4.2.x.

  Cleanup:

   - Misc cleanups, plus the removal of obsolete code such as Calgary
     IOMMU support, which code hasn't seen any real testing in a long
     time and there's no known users left.

  apic:

   - Two changes: a cleanup and a fix for an (old) race for oneshot
     threaded IRQ handlers"

* 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/insn: Fix awk regexp warnings

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove unused asm/rio.h
  x86: Fix typos in comments
  x86/pci: Remove #ifdef __KERNEL__ guard from <asm/pci.h>
  x86/pci: Remove pci_64.h
  x86: Remove the calgary IOMMU driver
  x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments
  x86/kdump: Remove the unused crash_copy_backup_region()
  x86/nmi: Remove stale EDAC include leftover

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Rename misnamed functions
  x86/ioapic: Prevent inconsistent state when moving an interrupt
This commit is contained in:
Linus Torvalds
2019-11-26 08:21:54 -08:00
parent be2eca94d1 700c1018b8 b41d62201b 2579a4eefc
commit fd2615908d
21 changed files with 24 additions and 2029 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/apic/apic.c
View File

@@ -2337,7 +2337,7 @@ static int cpuid_to_apicid[] = {
#ifdef CONFIG_SMP
/**
* apic_id_is_primary_thread - Check whether APIC ID belongs to a primary thread
* @id: APIC ID to check
* @apicid: APIC ID to check
*/
bool apic_id_is_primary_thread(unsigned int apicid)
{

25
arch/x86/kernel/apic/io_apic.c
View File

@@ -1725,19 +1725,20 @@ static bool io_apic_level_ack_pending(struct mp_chip_data *data)
return false;
}
static inline bool ioapic_irqd_mask(struct irq_data *data)
static inline bool ioapic_prepare_move(struct irq_data *data)
{
/* If we are moving the irq we need to mask it */
/* If we are moving the IRQ we need to mask it */
if (unlikely(irqd_is_setaffinity_pending(data))) {
mask_ioapic_irq(data);
if (!irqd_irq_masked(data))
mask_ioapic_irq(data);
return true;
}
return false;
}
static inline void ioapic_irqd_unmask(struct irq_data *data, bool masked)
static inline void ioapic_finish_move(struct irq_data *data, bool moveit)
{
if (unlikely(masked)) {
if (unlikely(moveit)) {
/* Only migrate the irq if the ack has been received.
*
* On rare occasions the broadcast level triggered ack gets
@@ -1766,15 +1767,17 @@ static inline void ioapic_irqd_unmask(struct irq_data *data, bool masked)
*/
if (!io_apic_level_ack_pending(data->chip_data))
irq_move_masked_irq(data);
unmask_ioapic_irq(data);
/* If the IRQ is masked in the core, leave it: */
if (!irqd_irq_masked(data))
unmask_ioapic_irq(data);
}
}
#else
static inline bool ioapic_irqd_mask(struct irq_data *data)
static inline bool ioapic_prepare_move(struct irq_data *data)
{
return false;
}
static inline void ioapic_irqd_unmask(struct irq_data *data, bool masked)
static inline void ioapic_finish_move(struct irq_data *data, bool moveit)
{
}
#endif
@@ -1783,11 +1786,11 @@ static void ioapic_ack_level(struct irq_data *irq_data)
{
struct irq_cfg *cfg = irqd_cfg(irq_data);
unsigned long v;
bool masked;
bool moveit;
int i;
irq_complete_move(cfg);
masked = ioapic_irqd_mask(irq_data);
moveit = ioapic_prepare_move(irq_data);
/*
* It appears there is an erratum which affects at least version 0x11
@@ -1842,7 +1845,7 @@ static void ioapic_ack_level(struct irq_data *irq_data)
eoi_ioapic_pin(cfg->vector, irq_data->chip_data);
}
ioapic_irqd_unmask(irq_data, masked);
ioapic_finish_move(irq_data, moveit);
}
static void ioapic_ir_ack_level(struct irq_data *irq_data)