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x86/entry: Convert various hypervisor vectors to IDTENTRY_SYSVEC

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Convert various hypervisor vectors to IDTENTRY_SYSVEC:

  - Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
  - Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
  - Remove the ASM idtentries in 64-bit
  - Remove the BUILD_INTERRUPT entries in 32-bit
  - Remove the old prototypes

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20200521202119.647997594@linutronix.de
This commit is contained in:
Thomas Gleixner
2020-05-21 22:05:43 +02:00
parent 9c3b1f4975
commit a16be368dd
9 changed files with 27 additions and 98 deletions
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22
arch/x86/kernel/cpu/mshyperv.c
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@@ -23,6 +23,7 @@
#include <asm/hyperv-tlfs.h>
#include <asm/mshyperv.h>
#include <asm/desc.h>
#include <asm/idtentry.h>
#include <asm/irq_regs.h>
#include <asm/i8259.h>
#include <asm/apic.h>
@@ -40,11 +41,10 @@ static void (*hv_stimer0_handler)(void);
static void (*hv_kexec_handler)(void);
static void (*hv_crash_handler)(struct pt_regs *regs);
__visible void __irq_entry hyperv_vector_handler(struct pt_regs *regs)
DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback)
{
struct pt_regs *old_regs = set_irq_regs(regs);
entering_irq();
inc_irq_stat(irq_hv_callback_count);
if (vmbus_handler)
vmbus_handler();
@@ -52,7 +52,6 @@ __visible void __irq_entry hyperv_vector_handler(struct pt_regs *regs)
if (ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED)
ack_APIC_irq();
exiting_irq();
set_irq_regs(old_regs);
}
@@ -73,19 +72,16 @@ EXPORT_SYMBOL_GPL(hv_remove_vmbus_irq);
* Routines to do per-architecture handling of stimer0
* interrupts when in Direct Mode
*/
__visible void __irq_entry hv_stimer0_vector_handler(struct pt_regs *regs)
DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_stimer0)
{
struct pt_regs *old_regs = set_irq_regs(regs);
entering_irq();
inc_irq_stat(hyperv_stimer0_count);
if (hv_stimer0_handler)
hv_stimer0_handler();
add_interrupt_randomness(HYPERV_STIMER0_VECTOR, 0);
ack_APIC_irq();
exiting_irq();
set_irq_regs(old_regs);
}
@@ -331,17 +327,19 @@ static void __init ms_hyperv_init_platform(void)
x86_platform.apic_post_init = hyperv_init;
hyperv_setup_mmu_ops();
/* Setup the IDT for hypervisor callback */
alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, hyperv_callback_vector);
alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_hyperv_callback);
/* Setup the IDT for reenlightenment notifications */
if (ms_hyperv.features & HV_X64_ACCESS_REENLIGHTENMENT)
if (ms_hyperv.features & HV_X64_ACCESS_REENLIGHTENMENT) {
alloc_intr_gate(HYPERV_REENLIGHTENMENT_VECTOR,
hyperv_reenlightenment_vector);
asm_sysvec_hyperv_reenlightenment);
}
/* Setup the IDT for stimer0 */
if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE)
if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE) {
alloc_intr_gate(HYPERV_STIMER0_VECTOR,
hv_stimer0_callback_vector);
asm_sysvec_hyperv_stimer0);
}
# ifdef CONFIG_SMP
smp_ops.smp_prepare_boot_cpu = hv_smp_prepare_boot_cpu;