hv: Leave interrupts disabled during vmexit - ACRN partition mode

Since vmexit handling in ACRN partition mode is not complex (since no SOS and
all devices passthru), interrupts can stay disabled in root mode during
vmexit handling.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>

hypervisor/arch/x86/idt.S

@@ -389,11 +389,7 @@ external_interrupt_save_frame:
     /* Put current stack pointer into 1st param register (rdi) */
     movq    %rsp, %rdi
 
-#ifdef CONFIG_PARTITION_MODE
-    call   partition_mode_dispatch_interrupt
-#else
     call   dispatch_interrupt
-#endif
 
     /*
      * We disable softirq path from interrupt IRET, since right now all IRQ

hypervisor/include/arch/x86/cpu.h

@@ -367,17 +367,25 @@ void wait_sync_change(uint64_t *sync, uint64_t wake_sync);
 			"a" (msrl), "d" (msrh));            \
 }
 
+#ifdef CONFIG_PARTITION_MODE
+#define CPU_IRQ_DISABLE()
+#else
 /* Disables interrupts on the current CPU */
 #define CPU_IRQ_DISABLE()                                   \
 {                                                           \
 	asm volatile ("cli\n" : : : "cc");                  \
 }
+#endif
 
+#ifdef CONFIG_PARTITION_MODE
+#define CPU_IRQ_ENABLE()
+#else
 /* Enables interrupts on the current CPU */
 #define CPU_IRQ_ENABLE()                                    \
 {                                                           \
 	asm volatile ("sti\n" : : : "cc");                  \
 }
+#endif
 
 /* This macro writes the stack pointer. */
 #define CPU_SP_WRITE(stack_ptr)                             \