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Merge branch 'parisc-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 

Pull parisc fixes from Helge Deller:

 - Fix build issues when kprobes are enabled

 - Speed up ITLB/DTLB cache flushes when running on machines with
   combined TLBs

* 'parisc-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Flush ITLB in flush_tlb_all_local() only on split TLB machines
  parisc: add kprobe_fault_handler()
This commit is contained in:
Linus Torvalds 2019-07-23 15:34:59 -07:00
parent 7b5cf701ea 69245c9756
commit ad5e427e0f
2 changed files with 6 additions and 1 deletions
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4
arch/parisc/include/asm/kprobes.h
View File

@ -50,6 +50,10 @@ struct kprobe_ctlblk {
int __kprobes parisc_kprobe_break_handler(struct pt_regs *regs);
int __kprobes parisc_kprobe_ss_handler(struct pt_regs *regs);
static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
{
return 0;
}
#endif /* CONFIG_KPROBES */
#endif /* _PARISC_KPROBES_H */

3
arch/parisc/kernel/pacache.S
View File

@ -63,7 +63,7 @@ ENTRY_CFI(flush_tlb_all_local)
/* Flush Instruction Tlb */
LDREG ITLB_SID_BASE(%r1), %r20
88: LDREG ITLB_SID_BASE(%r1), %r20
LDREG ITLB_SID_STRIDE(%r1), %r21
LDREG ITLB_SID_COUNT(%r1), %r22
LDREG ITLB_OFF_BASE(%r1), %arg0
@ -103,6 +103,7 @@ fitonemiddle: /* Loop if LOOP = 1 */
add %r21, %r20, %r20 /* increment space */
fitdone:
ALTERNATIVE(88b, fitdone, ALT_COND_NO_SPLIT_TLB, INSN_NOP)
/* Flush Data Tlb */