#include <asm/cpu_entry_area.h>
#include <asm/perf_event.h>
+#include <asm/tlbflush.h>
#include <asm/insn.h>
#include "../perf_event.h"
static void ds_update_cea(void *cea, void *addr, size_t size, pgprot_t prot)
{
+ unsigned long start = (unsigned long)cea;
phys_addr_t pa;
size_t msz = 0;
pa = virt_to_phys(addr);
+
+ preempt_disable();
for (; msz < size; msz += PAGE_SIZE, pa += PAGE_SIZE, cea += PAGE_SIZE)
cea_set_pte(cea, pa, prot);
+
+ /*
+ * This is a cross-CPU update of the cpu_entry_area, we must shoot down
+ * all TLB entries for it.
+ */
+ flush_tlb_kernel_range(start, start + size);
+ preempt_enable();
}
static void ds_clear_cea(void *cea, size_t size)
{
+ unsigned long start = (unsigned long)cea;
size_t msz = 0;
+ preempt_disable();
for (; msz < size; msz += PAGE_SIZE, cea += PAGE_SIZE)
cea_set_pte(cea, 0, PAGE_NONE);
+
+ flush_tlb_kernel_range(start, start + size);
+ preempt_enable();
}
static void *dsalloc_pages(size_t size, gfp_t flags, int cpu)