3 * Copyright (C) 2001 Todd Inglett, IBM Corporation
5 * pSeries LPAR support.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 /* Enables debugging of low-level hash table routines - careful! */
25 #include <linux/kernel.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/console.h>
28 #include <linux/export.h>
29 #include <linux/static_key.h>
30 #include <asm/processor.h>
33 #include <asm/pgtable.h>
34 #include <asm/machdep.h>
35 #include <asm/mmu_context.h>
36 #include <asm/iommu.h>
37 #include <asm/tlbflush.h>
40 #include <asm/cputable.h>
43 #include <asm/trace.h>
44 #include <asm/firmware.h>
45 #include <asm/plpar_wrappers.h>
46 #include <asm/fadump.h>
50 /* Flag bits for H_BULK_REMOVE */
51 #define HBR_REQUEST 0x4000000000000000UL
52 #define HBR_RESPONSE 0x8000000000000000UL
53 #define HBR_END 0xc000000000000000UL
54 #define HBR_AVPN 0x0200000000000000UL
55 #define HBR_ANDCOND 0x0100000000000000UL
59 EXPORT_SYMBOL(plpar_hcall
);
60 EXPORT_SYMBOL(plpar_hcall9
);
61 EXPORT_SYMBOL(plpar_hcall_norets
);
63 void vpa_init(int cpu
)
65 int hwcpu
= get_hard_smp_processor_id(cpu
);
68 struct paca_struct
*pp
;
69 struct dtl_entry
*dtl
;
72 * The spec says it "may be problematic" if CPU x registers the VPA of
73 * CPU y. We should never do that, but wail if we ever do.
75 WARN_ON(cpu
!= smp_processor_id());
77 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
78 lppaca_of(cpu
).vmxregs_in_use
= 1;
80 if (cpu_has_feature(CPU_FTR_ARCH_207S
))
81 lppaca_of(cpu
).ebb_regs_in_use
= 1;
83 addr
= __pa(&lppaca_of(cpu
));
84 ret
= register_vpa(hwcpu
, addr
);
87 pr_err("WARNING: VPA registration for cpu %d (hw %d) of area "
88 "%lx failed with %ld\n", cpu
, hwcpu
, addr
, ret
);
92 * PAPR says this feature is SLB-Buffer but firmware never
93 * reports that. All SPLPAR support SLB shadow buffer.
95 addr
= __pa(paca
[cpu
].slb_shadow_ptr
);
96 if (firmware_has_feature(FW_FEATURE_SPLPAR
)) {
97 ret
= register_slb_shadow(hwcpu
, addr
);
99 pr_err("WARNING: SLB shadow buffer registration for "
100 "cpu %d (hw %d) of area %lx failed with %ld\n",
101 cpu
, hwcpu
, addr
, ret
);
105 * Register dispatch trace log, if one has been allocated.
108 dtl
= pp
->dispatch_log
;
112 lppaca_of(cpu
).dtl_idx
= 0;
114 /* hypervisor reads buffer length from this field */
115 dtl
->enqueue_to_dispatch_time
= cpu_to_be32(DISPATCH_LOG_BYTES
);
116 ret
= register_dtl(hwcpu
, __pa(dtl
));
118 pr_err("WARNING: DTL registration of cpu %d (hw %d) "
119 "failed with %ld\n", smp_processor_id(),
121 lppaca_of(cpu
).dtl_enable_mask
= 2;
125 static long pSeries_lpar_hpte_insert(unsigned long hpte_group
,
126 unsigned long vpn
, unsigned long pa
,
127 unsigned long rflags
, unsigned long vflags
,
128 int psize
, int apsize
, int ssize
)
130 unsigned long lpar_rc
;
133 unsigned long hpte_v
, hpte_r
;
135 if (!(vflags
& HPTE_V_BOLTED
))
136 pr_devel("hpte_insert(group=%lx, vpn=%016lx, "
137 "pa=%016lx, rflags=%lx, vflags=%lx, psize=%d)\n",
138 hpte_group
, vpn
, pa
, rflags
, vflags
, psize
);
140 hpte_v
= hpte_encode_v(vpn
, psize
, apsize
, ssize
) | vflags
| HPTE_V_VALID
;
141 hpte_r
= hpte_encode_r(pa
, psize
, apsize
) | rflags
;
143 if (!(vflags
& HPTE_V_BOLTED
))
144 pr_devel(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v
, hpte_r
);
146 /* Now fill in the actual HPTE */
147 /* Set CEC cookie to 0 */
149 /* I-cache Invalidate = 0 */
150 /* I-cache synchronize = 0 */
154 /* Make pHyp happy */
155 if ((rflags
& _PAGE_NO_CACHE
) && !(rflags
& _PAGE_WRITETHRU
))
158 if (firmware_has_feature(FW_FEATURE_XCMO
) && !(hpte_r
& HPTE_R_N
))
159 flags
|= H_COALESCE_CAND
;
161 lpar_rc
= plpar_pte_enter(flags
, hpte_group
, hpte_v
, hpte_r
, &slot
);
162 if (unlikely(lpar_rc
== H_PTEG_FULL
)) {
163 if (!(vflags
& HPTE_V_BOLTED
))
169 * Since we try and ioremap PHBs we don't own, the pte insert
170 * will fail. However we must catch the failure in hash_page
171 * or we will loop forever, so return -2 in this case.
173 if (unlikely(lpar_rc
!= H_SUCCESS
)) {
174 if (!(vflags
& HPTE_V_BOLTED
))
175 pr_devel(" lpar err %ld\n", lpar_rc
);
178 if (!(vflags
& HPTE_V_BOLTED
))
179 pr_devel(" -> slot: %lu\n", slot
& 7);
181 /* Because of iSeries, we have to pass down the secondary
182 * bucket bit here as well
184 return (slot
& 7) | (!!(vflags
& HPTE_V_SECONDARY
) << 3);
187 static DEFINE_SPINLOCK(pSeries_lpar_tlbie_lock
);
189 static long pSeries_lpar_hpte_remove(unsigned long hpte_group
)
191 unsigned long slot_offset
;
192 unsigned long lpar_rc
;
194 unsigned long dummy1
, dummy2
;
196 /* pick a random slot to start at */
197 slot_offset
= mftb() & 0x7;
199 for (i
= 0; i
< HPTES_PER_GROUP
; i
++) {
201 /* don't remove a bolted entry */
202 lpar_rc
= plpar_pte_remove(H_ANDCOND
, hpte_group
+ slot_offset
,
203 (0x1UL
<< 4), &dummy1
, &dummy2
);
204 if (lpar_rc
== H_SUCCESS
)
208 * The test for adjunct partition is performed before the
209 * ANDCOND test. H_RESOURCE may be returned, so we need to
210 * check for that as well.
212 BUG_ON(lpar_rc
!= H_NOT_FOUND
&& lpar_rc
!= H_RESOURCE
);
221 static void pSeries_lpar_hptab_clear(void)
223 unsigned long size_bytes
= 1UL << ppc64_pft_size
;
224 unsigned long hpte_count
= size_bytes
>> 4;
232 /* Read in batches of 4,
233 * invalidate only valid entries not in the VRMA
234 * hpte_count will be a multiple of 4
236 for (i
= 0; i
< hpte_count
; i
+= 4) {
237 lpar_rc
= plpar_pte_read_4_raw(0, i
, (void *)ptes
);
238 if (lpar_rc
!= H_SUCCESS
)
240 for (j
= 0; j
< 4; j
++){
241 if ((ptes
[j
].pteh
& HPTE_V_VRMA_MASK
) ==
244 if (ptes
[j
].pteh
& HPTE_V_VALID
)
245 plpar_pte_remove_raw(0, i
+ j
, 0,
246 &(ptes
[j
].pteh
), &(ptes
[j
].ptel
));
250 #ifdef __LITTLE_ENDIAN__
252 * Reset exceptions to big endian.
254 * FIXME this is a hack for kexec, we need to reset the exception
255 * endian before starting the new kernel and this is a convenient place
258 * This is also called on boot when a fadump happens. In that case we
259 * must not change the exception endian mode.
261 if (firmware_has_feature(FW_FEATURE_SET_MODE
) && !is_fadump_active()) {
264 rc
= pseries_big_endian_exceptions();
266 * At this point it is unlikely panic() will get anything
267 * out to the user, but at least this will stop us from
268 * continuing on further and creating an even more
269 * difficult to debug situation.
272 panic("Could not enable big endian exceptions");
278 * NOTE: for updatepp ops we are fortunate that the linux "newpp" bits and
279 * the low 3 bits of flags happen to line up. So no transform is needed.
280 * We can probably optimize here and assume the high bits of newpp are
281 * already zero. For now I am paranoid.
283 static long pSeries_lpar_hpte_updatepp(unsigned long slot
,
286 int psize
, int apsize
,
287 int ssize
, int local
)
289 unsigned long lpar_rc
;
290 unsigned long flags
= (newpp
& 7) | H_AVPN
;
291 unsigned long want_v
;
293 want_v
= hpte_encode_avpn(vpn
, psize
, ssize
);
295 pr_devel(" update: avpnv=%016lx, hash=%016lx, f=%lx, psize: %d ...",
296 want_v
, slot
, flags
, psize
);
298 lpar_rc
= plpar_pte_protect(flags
, slot
, want_v
);
300 if (lpar_rc
== H_NOT_FOUND
) {
301 pr_devel("not found !\n");
307 BUG_ON(lpar_rc
!= H_SUCCESS
);
312 static unsigned long pSeries_lpar_hpte_getword0(unsigned long slot
)
314 unsigned long dword0
;
315 unsigned long lpar_rc
;
316 unsigned long dummy_word1
;
319 /* Read 1 pte at a time */
320 /* Do not need RPN to logical page translation */
321 /* No cross CEC PFT access */
324 lpar_rc
= plpar_pte_read(flags
, slot
, &dword0
, &dummy_word1
);
326 BUG_ON(lpar_rc
!= H_SUCCESS
);
331 static long pSeries_lpar_hpte_find(unsigned long vpn
, int psize
, int ssize
)
336 unsigned long want_v
, hpte_v
;
338 hash
= hpt_hash(vpn
, mmu_psize_defs
[psize
].shift
, ssize
);
339 want_v
= hpte_encode_avpn(vpn
, psize
, ssize
);
341 /* Bolted entries are always in the primary group */
342 slot
= (hash
& htab_hash_mask
) * HPTES_PER_GROUP
;
343 for (i
= 0; i
< HPTES_PER_GROUP
; i
++) {
344 hpte_v
= pSeries_lpar_hpte_getword0(slot
);
346 if (HPTE_V_COMPARE(hpte_v
, want_v
) && (hpte_v
& HPTE_V_VALID
))
355 static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp
,
357 int psize
, int ssize
)
360 unsigned long lpar_rc
, slot
, vsid
, flags
;
362 vsid
= get_kernel_vsid(ea
, ssize
);
363 vpn
= hpt_vpn(ea
, vsid
, ssize
);
365 slot
= pSeries_lpar_hpte_find(vpn
, psize
, ssize
);
369 lpar_rc
= plpar_pte_protect(flags
, slot
, 0);
371 BUG_ON(lpar_rc
!= H_SUCCESS
);
374 static void pSeries_lpar_hpte_invalidate(unsigned long slot
, unsigned long vpn
,
375 int psize
, int apsize
,
376 int ssize
, int local
)
378 unsigned long want_v
;
379 unsigned long lpar_rc
;
380 unsigned long dummy1
, dummy2
;
382 pr_devel(" inval : slot=%lx, vpn=%016lx, psize: %d, local: %d\n",
383 slot
, vpn
, psize
, local
);
385 want_v
= hpte_encode_avpn(vpn
, psize
, ssize
);
386 lpar_rc
= plpar_pte_remove(H_AVPN
, slot
, want_v
, &dummy1
, &dummy2
);
387 if (lpar_rc
== H_NOT_FOUND
)
390 BUG_ON(lpar_rc
!= H_SUCCESS
);
394 * Limit iterations holding pSeries_lpar_tlbie_lock to 3. We also need
395 * to make sure that we avoid bouncing the hypervisor tlbie lock.
397 #define PPC64_HUGE_HPTE_BATCH 12
399 static void __pSeries_lpar_hugepage_invalidate(unsigned long *slot
,
400 unsigned long *vpn
, int count
,
401 int psize
, int ssize
)
403 unsigned long param
[8];
404 int i
= 0, pix
= 0, rc
;
405 unsigned long flags
= 0;
406 int lock_tlbie
= !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE
);
409 spin_lock_irqsave(&pSeries_lpar_tlbie_lock
, flags
);
411 for (i
= 0; i
< count
; i
++) {
413 if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE
)) {
414 pSeries_lpar_hpte_invalidate(slot
[i
], vpn
[i
], psize
, 0,
417 param
[pix
] = HBR_REQUEST
| HBR_AVPN
| slot
[i
];
418 param
[pix
+1] = hpte_encode_avpn(vpn
[i
], psize
, ssize
);
421 rc
= plpar_hcall9(H_BULK_REMOVE
, param
,
422 param
[0], param
[1], param
[2],
423 param
[3], param
[4], param
[5],
425 BUG_ON(rc
!= H_SUCCESS
);
431 param
[pix
] = HBR_END
;
432 rc
= plpar_hcall9(H_BULK_REMOVE
, param
, param
[0], param
[1],
433 param
[2], param
[3], param
[4], param
[5],
435 BUG_ON(rc
!= H_SUCCESS
);
439 spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock
, flags
);
442 static void pSeries_lpar_hugepage_invalidate(unsigned long vsid
,
444 unsigned char *hpte_slot_array
,
445 int psize
, int ssize
)
448 unsigned long s_addr
= addr
;
449 unsigned int max_hpte_count
, valid
;
450 unsigned long vpn_array
[PPC64_HUGE_HPTE_BATCH
];
451 unsigned long slot_array
[PPC64_HUGE_HPTE_BATCH
];
452 unsigned long shift
, hidx
, vpn
= 0, hash
, slot
;
454 shift
= mmu_psize_defs
[psize
].shift
;
455 max_hpte_count
= 1U << (PMD_SHIFT
- shift
);
457 for (i
= 0; i
< max_hpte_count
; i
++) {
458 valid
= hpte_valid(hpte_slot_array
, i
);
461 hidx
= hpte_hash_index(hpte_slot_array
, i
);
464 addr
= s_addr
+ (i
* (1ul << shift
));
465 vpn
= hpt_vpn(addr
, vsid
, ssize
);
466 hash
= hpt_hash(vpn
, shift
, ssize
);
467 if (hidx
& _PTEIDX_SECONDARY
)
470 slot
= (hash
& htab_hash_mask
) * HPTES_PER_GROUP
;
471 slot
+= hidx
& _PTEIDX_GROUP_IX
;
473 slot_array
[index
] = slot
;
474 vpn_array
[index
] = vpn
;
475 if (index
== PPC64_HUGE_HPTE_BATCH
- 1) {
477 * Now do a bluk invalidate
479 __pSeries_lpar_hugepage_invalidate(slot_array
,
481 PPC64_HUGE_HPTE_BATCH
,
488 __pSeries_lpar_hugepage_invalidate(slot_array
, vpn_array
,
489 index
, psize
, ssize
);
492 static void pSeries_lpar_hpte_removebolted(unsigned long ea
,
493 int psize
, int ssize
)
496 unsigned long slot
, vsid
;
498 vsid
= get_kernel_vsid(ea
, ssize
);
499 vpn
= hpt_vpn(ea
, vsid
, ssize
);
501 slot
= pSeries_lpar_hpte_find(vpn
, psize
, ssize
);
504 * lpar doesn't use the passed actual page size
506 pSeries_lpar_hpte_invalidate(slot
, vpn
, psize
, 0, ssize
, 0);
510 * Take a spinlock around flushes to avoid bouncing the hypervisor tlbie
513 static void pSeries_lpar_flush_hash_range(unsigned long number
, int local
)
516 unsigned long i
, pix
, rc
;
517 unsigned long flags
= 0;
518 struct ppc64_tlb_batch
*batch
= &__get_cpu_var(ppc64_tlb_batch
);
519 int lock_tlbie
= !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE
);
520 unsigned long param
[9];
521 unsigned long hash
, index
, shift
, hidx
, slot
;
526 spin_lock_irqsave(&pSeries_lpar_tlbie_lock
, flags
);
528 psize
= batch
->psize
;
529 ssize
= batch
->ssize
;
531 for (i
= 0; i
< number
; i
++) {
534 pte_iterate_hashed_subpages(pte
, psize
, vpn
, index
, shift
) {
535 hash
= hpt_hash(vpn
, shift
, ssize
);
536 hidx
= __rpte_to_hidx(pte
, index
);
537 if (hidx
& _PTEIDX_SECONDARY
)
539 slot
= (hash
& htab_hash_mask
) * HPTES_PER_GROUP
;
540 slot
+= hidx
& _PTEIDX_GROUP_IX
;
541 if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE
)) {
543 * lpar doesn't use the passed actual page size
545 pSeries_lpar_hpte_invalidate(slot
, vpn
, psize
,
548 param
[pix
] = HBR_REQUEST
| HBR_AVPN
| slot
;
549 param
[pix
+1] = hpte_encode_avpn(vpn
, psize
,
553 rc
= plpar_hcall9(H_BULK_REMOVE
, param
,
554 param
[0], param
[1], param
[2],
555 param
[3], param
[4], param
[5],
557 BUG_ON(rc
!= H_SUCCESS
);
561 } pte_iterate_hashed_end();
564 param
[pix
] = HBR_END
;
565 rc
= plpar_hcall9(H_BULK_REMOVE
, param
, param
[0], param
[1],
566 param
[2], param
[3], param
[4], param
[5],
568 BUG_ON(rc
!= H_SUCCESS
);
572 spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock
, flags
);
575 static int __init
disable_bulk_remove(char *str
)
577 if (strcmp(str
, "off") == 0 &&
578 firmware_has_feature(FW_FEATURE_BULK_REMOVE
)) {
579 printk(KERN_INFO
"Disabling BULK_REMOVE firmware feature");
580 powerpc_firmware_features
&= ~FW_FEATURE_BULK_REMOVE
;
585 __setup("bulk_remove=", disable_bulk_remove
);
587 void __init
hpte_init_lpar(void)
589 ppc_md
.hpte_invalidate
= pSeries_lpar_hpte_invalidate
;
590 ppc_md
.hpte_updatepp
= pSeries_lpar_hpte_updatepp
;
591 ppc_md
.hpte_updateboltedpp
= pSeries_lpar_hpte_updateboltedpp
;
592 ppc_md
.hpte_insert
= pSeries_lpar_hpte_insert
;
593 ppc_md
.hpte_remove
= pSeries_lpar_hpte_remove
;
594 ppc_md
.hpte_removebolted
= pSeries_lpar_hpte_removebolted
;
595 ppc_md
.flush_hash_range
= pSeries_lpar_flush_hash_range
;
596 ppc_md
.hpte_clear_all
= pSeries_lpar_hptab_clear
;
597 ppc_md
.hugepage_invalidate
= pSeries_lpar_hugepage_invalidate
;
600 #ifdef CONFIG_PPC_SMLPAR
601 #define CMO_FREE_HINT_DEFAULT 1
602 static int cmo_free_hint_flag
= CMO_FREE_HINT_DEFAULT
;
604 static int __init
cmo_free_hint(char *str
)
607 parm
= strstrip(str
);
609 if (strcasecmp(parm
, "no") == 0 || strcasecmp(parm
, "off") == 0) {
610 printk(KERN_INFO
"cmo_free_hint: CMO free page hinting is not active.\n");
611 cmo_free_hint_flag
= 0;
615 cmo_free_hint_flag
= 1;
616 printk(KERN_INFO
"cmo_free_hint: CMO free page hinting is active.\n");
618 if (strcasecmp(parm
, "yes") == 0 || strcasecmp(parm
, "on") == 0)
624 __setup("cmo_free_hint=", cmo_free_hint
);
626 static void pSeries_set_page_state(struct page
*page
, int order
,
630 unsigned long cmo_page_sz
, addr
;
632 cmo_page_sz
= cmo_get_page_size();
633 addr
= __pa((unsigned long)page_address(page
));
635 for (i
= 0; i
< (1 << order
); i
++, addr
+= PAGE_SIZE
) {
636 for (j
= 0; j
< PAGE_SIZE
; j
+= cmo_page_sz
)
637 plpar_hcall_norets(H_PAGE_INIT
, state
, addr
+ j
, 0);
641 void arch_free_page(struct page
*page
, int order
)
643 if (!cmo_free_hint_flag
|| !firmware_has_feature(FW_FEATURE_CMO
))
646 pSeries_set_page_state(page
, order
, H_PAGE_SET_UNUSED
);
648 EXPORT_SYMBOL(arch_free_page
);
652 #ifdef CONFIG_TRACEPOINTS
653 #ifdef HAVE_JUMP_LABEL
654 struct static_key hcall_tracepoint_key
= STATIC_KEY_INIT
;
656 void hcall_tracepoint_regfunc(void)
658 static_key_slow_inc(&hcall_tracepoint_key
);
661 void hcall_tracepoint_unregfunc(void)
663 static_key_slow_dec(&hcall_tracepoint_key
);
667 * We optimise our hcall path by placing hcall_tracepoint_refcount
668 * directly in the TOC so we can check if the hcall tracepoints are
669 * enabled via a single load.
672 /* NB: reg/unreg are called while guarded with the tracepoints_mutex */
673 extern long hcall_tracepoint_refcount
;
675 void hcall_tracepoint_regfunc(void)
677 hcall_tracepoint_refcount
++;
680 void hcall_tracepoint_unregfunc(void)
682 hcall_tracepoint_refcount
--;
687 * Since the tracing code might execute hcalls we need to guard against
688 * recursion. One example of this are spinlocks calling H_YIELD on
689 * shared processor partitions.
691 static DEFINE_PER_CPU(unsigned int, hcall_trace_depth
);
694 void __trace_hcall_entry(unsigned long opcode
, unsigned long *args
)
700 * We cannot call tracepoints inside RCU idle regions which
701 * means we must not trace H_CEDE.
703 if (opcode
== H_CEDE
)
706 local_irq_save(flags
);
708 depth
= &__get_cpu_var(hcall_trace_depth
);
715 trace_hcall_entry(opcode
, args
);
719 local_irq_restore(flags
);
722 void __trace_hcall_exit(long opcode
, unsigned long retval
,
723 unsigned long *retbuf
)
728 if (opcode
== H_CEDE
)
731 local_irq_save(flags
);
733 depth
= &__get_cpu_var(hcall_trace_depth
);
739 trace_hcall_exit(opcode
, retval
, retbuf
);
744 local_irq_restore(flags
);
750 * H_GET_MPP hcall returns info in 7 parms
752 int h_get_mpp(struct hvcall_mpp_data
*mpp_data
)
755 unsigned long retbuf
[PLPAR_HCALL9_BUFSIZE
];
757 rc
= plpar_hcall9(H_GET_MPP
, retbuf
);
759 mpp_data
->entitled_mem
= retbuf
[0];
760 mpp_data
->mapped_mem
= retbuf
[1];
762 mpp_data
->group_num
= (retbuf
[2] >> 2 * 8) & 0xffff;
763 mpp_data
->pool_num
= retbuf
[2] & 0xffff;
765 mpp_data
->mem_weight
= (retbuf
[3] >> 7 * 8) & 0xff;
766 mpp_data
->unallocated_mem_weight
= (retbuf
[3] >> 6 * 8) & 0xff;
767 mpp_data
->unallocated_entitlement
= retbuf
[3] & 0xffffffffffffUL
;
769 mpp_data
->pool_size
= retbuf
[4];
770 mpp_data
->loan_request
= retbuf
[5];
771 mpp_data
->backing_mem
= retbuf
[6];
775 EXPORT_SYMBOL(h_get_mpp
);
777 int h_get_mpp_x(struct hvcall_mpp_x_data
*mpp_x_data
)
780 unsigned long retbuf
[PLPAR_HCALL9_BUFSIZE
] = { 0 };
782 rc
= plpar_hcall9(H_GET_MPP_X
, retbuf
);
784 mpp_x_data
->coalesced_bytes
= retbuf
[0];
785 mpp_x_data
->pool_coalesced_bytes
= retbuf
[1];
786 mpp_x_data
->pool_purr_cycles
= retbuf
[2];
787 mpp_x_data
->pool_spurr_cycles
= retbuf
[3];