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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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9
arch/x86/kernel/cpu/acrn.c
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@@ -10,10 +10,10 @@
*/
#include <linux/interrupt.h>
#include <asm/acrn.h>
#include <asm/apic.h>
#include <asm/desc.h>
#include <asm/hypervisor.h>
#include <asm/idtentry.h>
#include <asm/irq_regs.h>
static uint32_t __init acrn_detect(void)
@@ -24,7 +24,7 @@ static uint32_t __init acrn_detect(void)
static void __init acrn_init_platform(void)
{
/* Setup the IDT for ACRN hypervisor callback */
alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, acrn_hv_callback_vector);
alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_acrn_hv_callback);
}
static bool acrn_x2apic_available(void)
@@ -39,7 +39,7 @@ static bool acrn_x2apic_available(void)
static void (*acrn_intr_handler)(void);
__visible void __irq_entry acrn_hv_vector_handler(struct pt_regs *regs)
DEFINE_IDTENTRY_SYSVEC(sysvec_acrn_hv_callback)
{
struct pt_regs *old_regs = set_irq_regs(regs);
@@ -50,13 +50,12 @@ __visible void __irq_entry acrn_hv_vector_handler(struct pt_regs *regs)
* will block the interrupt whose vector is lower than
* HYPERVISOR_CALLBACK_VECTOR.
*/
entering_ack_irq();
ack_APIC_irq();
inc_irq_stat(irq_hv_callback_count);
if (acrn_intr_handler)
acrn_intr_handler();
exiting_irq();
set_irq_regs(old_regs);
}