mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 18:23:53 +08:00
3f353858c9
While most accesses to the i8259 are with the kvm mutex taken, the call to kvm_pic_read_irq() is not. We can't easily take the kvm mutex there since the function is called with interrupts disabled. Fix by adding a spinlock to the virtual interrupt controller. Since we can't send an IPI under the spinlock (we also take the same spinlock in an irq disabled context), we defer the IPI until the spinlock is released. Similarly, we defer irq ack notifications until after spinlock release to avoid lock recursion. Signed-off-by: Avi Kivity <avi@redhat.com> |
||
|---|---|---|
| .. | ||
| i8254.c | ||
| i8254.h | ||
| i8259.c | ||
| irq.c | ||
| irq.h | ||
| Kconfig | ||
| kvm_cache_regs.h | ||
| kvm_svm.h | ||
| lapic.c | ||
| lapic.h | ||
| Makefile | ||
| mmu.c | ||
| mmu.h | ||
| paging_tmpl.h | ||
| svm.c | ||
| tss.h | ||
| vmx.c | ||
| x86_emulate.c | ||
| x86.c | ||
| x86.h | ||