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remote TLB invalidation code for multi-threaded applications (e.g., during munmap())

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This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2014-07-22 12:24:07 +09:00
parent a5b36e2b51
commit 101a0f6e4a
11 changed files with 435 additions and 33 deletions
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12
arch/x86/kernel/cpu.c
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@@ -407,6 +407,7 @@ void setup_x86_ap(void (*next_func)(void))
void arch_show_interrupt_context(const void *reg);
void set_signal(int sig, void *regs);
void check_signal(unsigned long rc, void *regs);
extern void tlb_flush_handler(int vector);
void handle_interrupt(int vector, struct x86_regs *regs)
{
@@ -419,7 +420,8 @@ void handle_interrupt(int vector, struct x86_regs *regs)
if (vector < 0 || vector > 255) {
panic("Invalid interrupt vector.");
} else if (vector < 32) {
}
else if (vector < 32) {
if (vector == 8 ||
(vector >= 10 && vector <= 15) || vector == 17) {
kprintf("Exception %d, rflags: 0x%lX CS: 0x%lX, RIP: 0x%lX\n",
@@ -430,7 +432,13 @@ void handle_interrupt(int vector, struct x86_regs *regs)
}
arch_show_interrupt_context(regs);
panic("Unhandled exception");
} else {
}
else if (vector >= IHK_TLB_FLUSH_IRQ_VECTOR_START &&
vector < IHK_TLB_FLUSH_IRQ_VECTOR_END) {
tlb_flush_handler(vector);
}
else {
list_for_each_entry(h, &handlers[vector - 32], list) {
if (h->func) {
h->func(h->priv);