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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2018-03-26 15:34:48 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-31 00:10:38 +1100 |
| commit | f384796c40dc55b3dba25e0ee9c1afd98c6d24d1 (patch) | |
| tree | 400e1127554c05abff89a9d09bac2b40f844eba7 /arch/powerpc/kernel/traps.c | |
| parent | 0dea04b288c06654b0de3563c5b8cdfe6130e450 (diff) | |
| download | linux-f384796c40dc55b3dba25e0ee9c1afd98c6d24d1.tar.gz | |
powerpc/mm: Add support for handling > 512TB address in SLB miss
For addresses above 512TB we allocate additional mmu contexts. To make
it all easy, addresses above 512TB are handled with IR/DR=1 and with
stack frame setup.
The mmu_context_t is also updated to track the new extended_ids. To
support upto 4PB we need a total 8 contexts.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Minor formatting tweaks and comment wording, switch BUG to WARN
in get_ea_context().]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 1e48d157196a61..f200bfd98b17e6 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1495,18 +1495,6 @@ bail: exception_exit(prev_state); } -void slb_miss_bad_addr(struct pt_regs *regs) -{ - enum ctx_state prev_state = exception_enter(); - - if (user_mode(regs)) - _exception(SIGSEGV, regs, SEGV_BNDERR, regs->dar); - else - bad_page_fault(regs, regs->dar, SIGSEGV); - - exception_exit(prev_state); -} - void StackOverflow(struct pt_regs *regs) { printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n", |