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It appears I misjudged the availability of the "tlbia" instruction. Put

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the previous implementation of arch_cpu_global_TLB_invalidate() back in
place (as fallback).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15902 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2006-01-11 01:31:15 +00:00
parent 40be0d5583
commit d0648592ca
1 changed files with 25 additions and 6 deletions
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31
src/system/kernel/arch/ppc/arch_cpu.cpp
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@ -14,6 +14,7 @@
#include <arch/cpu.h>
#include <boot/kernel_args.h>
static bool sHasTlbia;
status_t
arch_cpu_preboot_init(kernel_args *args)
@ -29,6 +30,10 @@ arch_cpu_preboot_init(kernel_args *args)
status_t
arch_cpu_init(kernel_args *args)
{
// TODO: Let the boot loader put that info into the kernel args
// (property "tlbia" in the CPU node).
sHasTlbia = false;
return B_OK;
}
@ -108,18 +113,32 @@ arch_cpu_invalidate_TLB_list(addr_t pages[], int num_pages)
void
arch_cpu_global_TLB_invalidate(void)
{
ppc_sync();
tlbia();
ppc_sync();
if (sHasTlbia) {
ppc_sync();
tlbia();
ppc_sync();
} else {
addr_t address = 0;
unsigned long i;
ppc_sync();
for (i = 0; i < 0x100000; i++) {
tlbie(address);
eieio();
ppc_sync();
address += B_PAGE_SIZE;
}
tlbsync();
ppc_sync();
}
}
void
arch_cpu_user_TLB_invalidate(void)
{
ppc_sync();
tlbia();
ppc_sync();
arch_cpu_global_TLB_invalidate();
}