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-rw-r--r--arch/powerpc/kernel/align.c36
-rw-r--r--arch/powerpc/kernel/ftrace.c5
-rw-r--r--arch/powerpc/kernel/head_32.S15
-rw-r--r--arch/powerpc/kernel/pci-common.c17
4 files changed, 49 insertions, 24 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 5af4e9b2dbe2..73cb6a3229ae 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -367,27 +367,24 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
367static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg, 367static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
368 unsigned int flags) 368 unsigned int flags)
369{ 369{
370 char *ptr = (char *) &current->thread.TS_FPR(reg); 370 char *ptr0 = (char *) &current->thread.TS_FPR(reg);
371 int i, ret; 371 char *ptr1 = (char *) &current->thread.TS_FPR(reg+1);
372 int i, ret, sw = 0;
372 373
373 if (!(flags & F)) 374 if (!(flags & F))
374 return 0; 375 return 0;
375 if (reg & 1) 376 if (reg & 1)
376 return 0; /* invalid form: FRS/FRT must be even */ 377 return 0; /* invalid form: FRS/FRT must be even */
377 if (!(flags & SW)) { 378 if (flags & SW)
378 /* not byte-swapped - easy */ 379 sw = 7;
379 if (!(flags & ST)) 380 ret = 0;
380 ret = __copy_from_user(ptr, addr, 16); 381 for (i = 0; i < 8; ++i) {
381 else 382 if (!(flags & ST)) {
382 ret = __copy_to_user(addr, ptr, 16); 383 ret |= __get_user(ptr0[i^sw], addr + i);
383 } else { 384 ret |= __get_user(ptr1[i^sw], addr + i + 8);
384 /* each FPR value is byte-swapped separately */ 385 } else {
385 ret = 0; 386 ret |= __put_user(ptr0[i^sw], addr + i);
386 for (i = 0; i < 16; ++i) { 387 ret |= __put_user(ptr1[i^sw], addr + i + 8);
387 if (!(flags & ST))
388 ret |= __get_user(ptr[i^7], addr + i);
389 else
390 ret |= __put_user(ptr[i^7], addr + i);
391 } 388 }
392 } 389 }
393 if (ret) 390 if (ret)
@@ -646,11 +643,16 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
646 unsigned int areg, struct pt_regs *regs, 643 unsigned int areg, struct pt_regs *regs,
647 unsigned int flags, unsigned int length) 644 unsigned int flags, unsigned int length)
648{ 645{
649 char *ptr = (char *) &current->thread.TS_FPR(reg); 646 char *ptr;
650 int ret = 0; 647 int ret = 0;
651 648
652 flush_vsx_to_thread(current); 649 flush_vsx_to_thread(current);
653 650
651 if (reg < 32)
652 ptr = (char *) &current->thread.TS_FPR(reg);
653 else
654 ptr = (char *) &current->thread.vr[reg - 32];
655
654 if (flags & ST) 656 if (flags & ST)
655 ret = __copy_to_user(addr, ptr, length); 657 ret = __copy_to_user(addr, ptr, length);
656 else { 658 else {
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 5355244c99ff..60c60ccf5e3c 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -195,8 +195,9 @@ __ftrace_make_nop(struct module *mod,
195 return -EINVAL; 195 return -EINVAL;
196 } 196 }
197 197
198 offset = (unsigned)((unsigned short)jmp[0]) << 16 | 198 /* The bottom half is signed extended */
199 (unsigned)((unsigned short)jmp[1]); 199 offset = ((unsigned)((unsigned short)jmp[0]) << 16) +
200 (int)((short)jmp[1]);
200 201
201 DEBUGP(" %x ", offset); 202 DEBUGP(" %x ", offset);
202 203
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index a1c4cfd25ded..d794a637e421 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -511,8 +511,11 @@ InstructionTLBMiss:
511 and r1,r1,r2 /* writable if _RW and _DIRTY */ 511 and r1,r1,r2 /* writable if _RW and _DIRTY */
512 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */ 512 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */
513 rlwimi r3,r3,32-1,31,31 /* _PAGE_USER -> PP lsb */ 513 rlwimi r3,r3,32-1,31,31 /* _PAGE_USER -> PP lsb */
514 ori r1,r1,0xe14 /* clear out reserved bits and M */ 514 ori r1,r1,0xe04 /* clear out reserved bits */
515 andc r1,r3,r1 /* PP = user? (rw&dirty? 2: 3): 0 */ 515 andc r1,r3,r1 /* PP = user? (rw&dirty? 2: 3): 0 */
516BEGIN_FTR_SECTION
517 rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */
518END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT)
516 mtspr SPRN_RPA,r1 519 mtspr SPRN_RPA,r1
517 mfspr r3,SPRN_IMISS 520 mfspr r3,SPRN_IMISS
518 tlbli r3 521 tlbli r3
@@ -585,8 +588,11 @@ DataLoadTLBMiss:
585 and r1,r1,r2 /* writable if _RW and _DIRTY */ 588 and r1,r1,r2 /* writable if _RW and _DIRTY */
586 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */ 589 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */
587 rlwimi r3,r3,32-1,31,31 /* _PAGE_USER -> PP lsb */ 590 rlwimi r3,r3,32-1,31,31 /* _PAGE_USER -> PP lsb */
588 ori r1,r1,0xe14 /* clear out reserved bits and M */ 591 ori r1,r1,0xe04 /* clear out reserved bits */
589 andc r1,r3,r1 /* PP = user? (rw&dirty? 2: 3): 0 */ 592 andc r1,r3,r1 /* PP = user? (rw&dirty? 2: 3): 0 */
593BEGIN_FTR_SECTION
594 rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */
595END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT)
590 mtspr SPRN_RPA,r1 596 mtspr SPRN_RPA,r1
591 mfspr r3,SPRN_DMISS 597 mfspr r3,SPRN_DMISS
592 tlbld r3 598 tlbld r3
@@ -653,8 +659,11 @@ DataStoreTLBMiss:
653 stw r3,0(r2) /* update PTE (accessed/dirty bits) */ 659 stw r3,0(r2) /* update PTE (accessed/dirty bits) */
654 /* Convert linux-style PTE to low word of PPC-style PTE */ 660 /* Convert linux-style PTE to low word of PPC-style PTE */
655 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */ 661 rlwimi r3,r3,32-1,30,30 /* _PAGE_USER -> PP msb */
656 li r1,0xe15 /* clear out reserved bits and M */ 662 li r1,0xe05 /* clear out reserved bits & PP lsb */
657 andc r1,r3,r1 /* PP = user? 2: 0 */ 663 andc r1,r3,r1 /* PP = user? 2: 0 */
664BEGIN_FTR_SECTION
665 rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */
666END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT)
658 mtspr SPRN_RPA,r1 667 mtspr SPRN_RPA,r1
659 mfspr r3,SPRN_DMISS 668 mfspr r3,SPRN_DMISS
660 tlbld r3 669 tlbld r3
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 19b12d2cbb4b..0f4181272311 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -561,8 +561,21 @@ int pci_mmap_legacy_page_range(struct pci_bus *bus,
561 (unsigned long long)(offset + size - 1)); 561 (unsigned long long)(offset + size - 1));
562 562
563 if (mmap_state == pci_mmap_mem) { 563 if (mmap_state == pci_mmap_mem) {
564 if ((offset + size) > hose->isa_mem_size) 564 /* Hack alert !
565 return -ENXIO; 565 *
566 * Because X is lame and can fail starting if it gets an error trying
567 * to mmap legacy_mem (instead of just moving on without legacy memory
568 * access) we fake it here by giving it anonymous memory, effectively
569 * behaving just like /dev/zero
570 */
571 if ((offset + size) > hose->isa_mem_size) {
572 printk(KERN_DEBUG
573 "Process %s (pid:%d) mapped non-existing PCI legacy memory for 0%04x:%02x\n",
574 current->comm, current->pid, pci_domain_nr(bus), bus->number);
575 if (vma->vm_flags & VM_SHARED)
576 return shmem_zero_setup(vma);
577 return 0;
578 }
566 offset += hose->isa_mem_phys; 579 offset += hose->isa_mem_phys;
567 } else { 580 } else {
568 unsigned long io_offset = (unsigned long)hose->io_base_virt - _IO_BASE; 581 unsigned long io_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-11 18:57:30 -0500