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-rw-r--r--arch/powerpc/boot/crt0.S4
-rw-r--r--arch/powerpc/include/asm/io.h20
-rw-r--r--arch/powerpc/include/asm/mpic.h7
-rw-r--r--arch/powerpc/kernel/eeh.c5
-rw-r--r--arch/powerpc/kernel/fadump.c23
-rw-r--r--arch/powerpc/kernel/machine_kexec.c7
-rw-r--r--arch/powerpc/kernel/tm.S20
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_hv.c2
-rw-r--r--arch/powerpc/kvm/trace.h8
-rw-r--r--arch/powerpc/kvm/trace_booke.h9
-rw-r--r--arch/powerpc/kvm/trace_hv.h9
-rw-r--r--arch/powerpc/kvm/trace_pr.h9
-rw-r--r--arch/powerpc/mm/numa.c2
-rw-r--r--arch/powerpc/mm/tlb_nohash.c3
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c2
15 files changed, 93 insertions, 37 deletions
diff --git a/arch/powerpc/boot/crt0.S b/arch/powerpc/boot/crt0.S
index 12866ccb5694..5c2199857aa8 100644
--- a/arch/powerpc/boot/crt0.S
+++ b/arch/powerpc/boot/crt0.S
@@ -47,8 +47,10 @@ p_end: .long _end
p_pstack: .long _platform_stack_top
#endif
- .weak _zimage_start
.globl _zimage_start
+ /* Clang appears to require the .weak directive to be after the symbol
+ * is defined. See https://bugs.llvm.org/show_bug.cgi?id=38921 */
+ .weak _zimage_start
_zimage_start:
.globl _zimage_start_lib
_zimage_start_lib:
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index f6fda8482f60..3b10f532c28e 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -333,19 +333,13 @@ extern void _memcpy_toio(volatile void __iomem *dest, const void *src,
* their hooks, a bitfield is reserved for use by the platform near the
* top of MMIO addresses (not PIO, those have to cope the hard way).
*
- * This bit field is 12 bits and is at the top of the IO virtual
- * addresses PCI_IO_INDIRECT_TOKEN_MASK.
+ * The highest address in the kernel virtual space are:
*
- * The kernel virtual space is thus:
+ * d0003fffffffffff # with Hash MMU
+ * c00fffffffffffff # with Radix MMU
*
- * 0xD000000000000000 : vmalloc
- * 0xD000080000000000 : PCI PHB IO space
- * 0xD000080080000000 : ioremap
- * 0xD0000fffffffffff : end of ioremap region
- *
- * Since the top 4 bits are reserved as the region ID, we use thus
- * the next 12 bits and keep 4 bits available for the future if the
- * virtual address space is ever to be extended.
+ * The top 4 bits are reserved as the region ID on hash, leaving us 8 bits
+ * that can be used for the field.
*
* The direct IO mapping operations will then mask off those bits
* before doing the actual access, though that only happen when
@@ -357,8 +351,8 @@ extern void _memcpy_toio(volatile void __iomem *dest, const void *src,
*/
#ifdef CONFIG_PPC_INDIRECT_MMIO
-#define PCI_IO_IND_TOKEN_MASK 0x0fff000000000000ul
-#define PCI_IO_IND_TOKEN_SHIFT 48
+#define PCI_IO_IND_TOKEN_SHIFT 52
+#define PCI_IO_IND_TOKEN_MASK (0xfful << PCI_IO_IND_TOKEN_SHIFT)
#define PCI_FIX_ADDR(addr) \
((PCI_IO_ADDR)(((unsigned long)(addr)) & ~PCI_IO_IND_TOKEN_MASK))
#define PCI_GET_ADDR_TOKEN(addr) \
diff --git a/arch/powerpc/include/asm/mpic.h b/arch/powerpc/include/asm/mpic.h
index 98697611e7b3..705f4dc5073b 100644
--- a/arch/powerpc/include/asm/mpic.h
+++ b/arch/powerpc/include/asm/mpic.h
@@ -392,7 +392,14 @@ extern struct bus_type mpic_subsys;
#define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
/* Get the version of primary MPIC */
+#ifdef CONFIG_MPIC
extern u32 fsl_mpic_primary_get_version(void);
+#else
+static inline u32 fsl_mpic_primary_get_version(void)
+{
+ return 0;
+}
+#endif
/* Allocate the controller structure and setup the linux irq descs
* for the range if interrupts passed in. No HW initialization is
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index e5bfbf62827a..8336b9016ca9 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -169,6 +169,11 @@ static size_t eeh_dump_dev_log(struct eeh_dev *edev, char *buf, size_t len)
int n = 0, l = 0;
char buffer[128];
+ if (!pdn) {
+ pr_warn("EEH: Note: No error log for absent device.\n");
+ return 0;
+ }
+
n += scnprintf(buf+n, len-n, "%04x:%02x:%02x.%01x\n",
edev->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index e3acf5c3480e..02925043575a 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -365,9 +365,9 @@ static int __init early_fadump_reserve_mem(char *p)
}
early_param("fadump_reserve_mem", early_fadump_reserve_mem);
-static void register_fw_dump(struct fadump_mem_struct *fdm)
+static int register_fw_dump(struct fadump_mem_struct *fdm)
{
- int rc;
+ int rc, err;
unsigned int wait_time;
pr_debug("Registering for firmware-assisted kernel dump...\n");
@@ -384,7 +384,11 @@ static void register_fw_dump(struct fadump_mem_struct *fdm)
} while (wait_time);
+ err = -EIO;
switch (rc) {
+ default:
+ pr_err("Failed to register. Unknown Error(%d).\n", rc);
+ break;
case -1:
printk(KERN_ERR "Failed to register firmware-assisted kernel"
" dump. Hardware Error(%d).\n", rc);
@@ -392,18 +396,22 @@ static void register_fw_dump(struct fadump_mem_struct *fdm)
case -3:
printk(KERN_ERR "Failed to register firmware-assisted kernel"
" dump. Parameter Error(%d).\n", rc);
+ err = -EINVAL;
break;
case -9:
printk(KERN_ERR "firmware-assisted kernel dump is already "
" registered.");
fw_dump.dump_registered = 1;
+ err = -EEXIST;
break;
case 0:
printk(KERN_INFO "firmware-assisted kernel dump registration"
" is successful\n");
fw_dump.dump_registered = 1;
+ err = 0;
break;
}
+ return err;
}
void crash_fadump(struct pt_regs *regs, const char *str)
@@ -1006,7 +1014,7 @@ static unsigned long init_fadump_header(unsigned long addr)
return addr;
}
-static void register_fadump(void)
+static int register_fadump(void)
{
unsigned long addr;
void *vaddr;
@@ -1017,7 +1025,7 @@ static void register_fadump(void)
* assisted dump.
*/
if (!fw_dump.reserve_dump_area_size)
- return;
+ return -ENODEV;
ret = fadump_setup_crash_memory_ranges();
if (ret)
@@ -1032,7 +1040,7 @@ static void register_fadump(void)
fadump_create_elfcore_headers(vaddr);
/* register the future kernel dump with firmware. */
- register_fw_dump(&fdm);
+ return register_fw_dump(&fdm);
}
static int fadump_unregister_dump(struct fadump_mem_struct *fdm)
@@ -1218,7 +1226,6 @@ static ssize_t fadump_register_store(struct kobject *kobj,
switch (buf[0]) {
case '0':
if (fw_dump.dump_registered == 0) {
- ret = -EINVAL;
goto unlock_out;
}
/* Un-register Firmware-assisted dump */
@@ -1226,11 +1233,11 @@ static ssize_t fadump_register_store(struct kobject *kobj,
break;
case '1':
if (fw_dump.dump_registered == 1) {
- ret = -EINVAL;
+ ret = -EEXIST;
goto unlock_out;
}
/* Register Firmware-assisted dump */
- register_fadump();
+ ret = register_fadump();
break;
default:
ret = -EINVAL;
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 2694d078741d..9dafd7af39b8 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -186,7 +186,12 @@ void __init reserve_crashkernel(void)
(unsigned long)(crashk_res.start >> 20),
(unsigned long)(memblock_phys_mem_size() >> 20));
- memblock_reserve(crashk_res.start, crash_size);
+ if (!memblock_is_region_memory(crashk_res.start, crash_size) ||
+ memblock_reserve(crashk_res.start, crash_size)) {
+ pr_err("Failed to reserve memory for crashkernel!\n");
+ crashk_res.start = crashk_res.end = 0;
+ return;
+ }
}
int overlaps_crashkernel(unsigned long start, unsigned long size)
diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index 3a2d04134da9..f59b73810630 100644
--- a/arch/powerpc/kernel/tm.S
+++ b/arch/powerpc/kernel/tm.S
@@ -166,13 +166,27 @@ _GLOBAL(tm_reclaim)
std r1, PACATMSCRATCH(r13)
ld r1, PACAR1(r13)
- /* Store the PPR in r11 and reset to decent value */
std r11, GPR11(r1) /* Temporary stash */
+ /*
+ * Move the saved user r1 to the kernel stack in case PACATMSCRATCH is
+ * clobbered by an exception once we turn on MSR_RI below.
+ */
+ ld r11, PACATMSCRATCH(r13)
+ std r11, GPR1(r1)
+
+ /*
+ * Store r13 away so we can free up the scratch SPR for the SLB fault
+ * handler (needed once we start accessing the thread_struct).
+ */
+ GET_SCRATCH0(r11)
+ std r11, GPR13(r1)
+
/* Reset MSR RI so we can take SLB faults again */
li r11, MSR_RI
mtmsrd r11, 1
+ /* Store the PPR in r11 and reset to decent value */
mfspr r11, SPRN_PPR
HMT_MEDIUM
@@ -197,11 +211,11 @@ _GLOBAL(tm_reclaim)
SAVE_GPR(8, r7) /* user r8 */
SAVE_GPR(9, r7) /* user r9 */
SAVE_GPR(10, r7) /* user r10 */
- ld r3, PACATMSCRATCH(r13) /* user r1 */
+ ld r3, GPR1(r1) /* user r1 */
ld r4, GPR7(r1) /* user r7 */
ld r5, GPR11(r1) /* user r11 */
ld r6, GPR12(r1) /* user r12 */
- GET_SCRATCH0(8) /* user r13 */
+ ld r8, GPR13(r1) /* user r13 */
std r3, GPR1(r7)
std r4, GPR7(r7)
std r5, GPR11(r7)
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 05f09ae82587..915e89fcd946 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -314,7 +314,7 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
unsigned long pp, key;
unsigned long v, gr;
__be64 *hptep;
- int index;
+ long int index;
int virtmode = vcpu->arch.shregs.msr & (data ? MSR_DR : MSR_IR);
/* Get SLB entry */
diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
index 2e0e67ef3544..e8cedf32345a 100644
--- a/arch/powerpc/kvm/trace.h
+++ b/arch/powerpc/kvm/trace.h
@@ -5,8 +5,6 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE trace
/*
* Tracepoint for guest mode entry.
@@ -119,4 +117,10 @@ TRACE_EVENT(kvm_check_requests,
#endif /* _TRACE_KVM_H */
/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace
+
#include <trace/define_trace.h>
diff --git a/arch/powerpc/kvm/trace_booke.h b/arch/powerpc/kvm/trace_booke.h
index 7ec534d1db9f..7eadbf449a1f 100644
--- a/arch/powerpc/kvm/trace_booke.h
+++ b/arch/powerpc/kvm/trace_booke.h
@@ -5,8 +5,6 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm_booke
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE trace_booke
#define kvm_trace_symbol_exit \
{0, "CRITICAL"}, \
@@ -217,4 +215,11 @@ TRACE_EVENT(kvm_booke_queue_irqprio,
#endif
/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_booke
+
#include <trace/define_trace.h>
diff --git a/arch/powerpc/kvm/trace_hv.h b/arch/powerpc/kvm/trace_hv.h
index fb21990c0fb4..d9a21a7bd5c9 100644
--- a/arch/powerpc/kvm/trace_hv.h
+++ b/arch/powerpc/kvm/trace_hv.h
@@ -8,8 +8,6 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm_hv
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE trace_hv
#define kvm_trace_symbol_hcall \
{H_REMOVE, "H_REMOVE"}, \
@@ -496,4 +494,11 @@ TRACE_EVENT(kvmppc_run_vcpu_exit,
#endif /* _TRACE_KVM_HV_H */
/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_hv
+
#include <trace/define_trace.h>
diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h
index d44f324184fb..e8e2b9ad4ac6 100644
--- a/arch/powerpc/kvm/trace_pr.h
+++ b/arch/powerpc/kvm/trace_pr.h
@@ -7,8 +7,6 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm_pr
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE trace_pr
TRACE_EVENT(kvm_book3s_reenter,
TP_PROTO(int r, struct kvm_vcpu *vcpu),
@@ -271,4 +269,11 @@ TRACE_EVENT(kvm_unmap_hva,
#endif /* _TRACE_KVM_H */
/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE trace_pr
+
#include <trace/define_trace.h>
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 6cff96e0d77b..0ef83c274019 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1289,7 +1289,7 @@ static long vphn_get_associativity(unsigned long cpu,
switch (rc) {
case H_FUNCTION:
- printk(KERN_INFO
+ printk_once(KERN_INFO
"VPHN is not supported. Disabling polling...\n");
stop_topology_update();
break;
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 0b50019505a5..79cf21be8f6e 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -481,6 +481,9 @@ static void setup_page_sizes(void)
for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) {
struct mmu_psize_def *def = &mmu_psize_defs[psize];
+ if (!def->shift)
+ continue;
+
if (tlb1ps & (1U << (def->shift - 10))) {
def->flags |= MMU_PAGE_SIZE_DIRECT;
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index f52cc6fd4290..8015e40bc7ee 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2623,7 +2623,7 @@ static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
level_shift = entries_shift + 3;
level_shift = max_t(unsigned, level_shift, PAGE_SHIFT);
- if ((level_shift - 3) * levels + page_shift >= 60)
+ if ((level_shift - 3) * levels + page_shift >= 55)
return -EINVAL;
/* Allocate TCE table */
generated by cgit v1.2.3 (git 2.0.4) at 2025-05-17 07:17:35 +0000