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arm64 updates for 4.13:

Browse source 
- RAS reporting via GHES/APEI (ACPI)
 - Indirect ftrace trampolines for modules
 - Improvements to kernel fault reporting
 - Page poisoning
 - Sigframe cleanups and preparation for SVE context
 - Core dump fixes
 - Sparse fixes (mainly relating to endianness)
 - xgene SoC PMU v3 driver
 - Misc cleanups and non-critical fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:

 - RAS reporting via GHES/APEI (ACPI)

 - Indirect ftrace trampolines for modules

 - Improvements to kernel fault reporting

 - Page poisoning

 - Sigframe cleanups and preparation for SVE context

 - Core dump fixes

 - Sparse fixes (mainly relating to endianness)

 - xgene SoC PMU v3 driver

 - Misc cleanups and non-critical fixes

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (75 commits)
  arm64: fix endianness annotation for 'struct jit_ctx' and friends
  arm64: cpuinfo: constify attribute_group structures.
  arm64: ptrace: Fix incorrect get_user() use in compat_vfp_set()
  arm64: ptrace: Remove redundant overrun check from compat_vfp_set()
  arm64: ptrace: Avoid setting compat FP[SC]R to garbage if get_user fails
  arm64: fix endianness annotation for __apply_alternatives()/get_alt_insn()
  arm64: fix endianness annotation in get_kaslr_seed()
  arm64: add missing conversion to __wsum in ip_fast_csum()
  arm64: fix endianness annotation in acpi_parking_protocol.c
  arm64: use readq() instead of readl() to read 64bit entry_point
  arm64: fix endianness annotation for reloc_insn_movw() & reloc_insn_imm()
  arm64: fix endianness annotation for aarch64_insn_write()
  arm64: fix endianness annotation in aarch64_insn_read()
  arm64: fix endianness annotation in call_undef_hook()
  arm64: fix endianness annotation for debug-monitors.c
  ras: mark stub functions as 'inline'
  arm64: pass endianness info to sparse
  arm64: ftrace: fix !CONFIG_ARM64_MODULE_PLTS kernels
  arm64: signal: Allow expansion of the signal frame
  acpi: apei: check for pending errors when probing GHES entries
  ...
This commit is contained in:
Linus Torvalds 2017-07-05 17:09:27 -07:00
commit 55a7b2125c
62 changed files with 2190 additions and 341 deletions
Download patch file Download diff file Expand all files Collapse all files

15
drivers/acpi/apei/Kconfig
View file

@ -39,6 +39,21 @@ config ACPI_APEI_PCIEAER
PCIe AER errors may be reported via APEI firmware first mode.
Turn on this option to enable the corresponding support.
config ACPI_APEI_SEA
bool "APEI Synchronous External Abort logging/recovering support"
depends on ARM64 && ACPI_APEI_GHES
default y
help
This option should be enabled if the system supports
firmware first handling of SEA (Synchronous External Abort).
SEA happens with certain faults of data abort or instruction
abort synchronous exceptions on ARMv8 systems. If a system
supports firmware first handling of SEA, the platform analyzes
and handles hardware error notifications from SEA, and it may then
form a HW error record for the OS to parse and handle. This
option allows the OS to look for such hardware error record, and
take appropriate action.
config ACPI_APEI_MEMORY_FAILURE
bool "APEI memory error recovering support"
depends on ACPI_APEI && MEMORY_FAILURE

206
drivers/acpi/apei/ghes.c
View file

@ -45,10 +45,14 @@
#include <linux/aer.h>
#include <linux/nmi.h>
#include <linux/sched/clock.h>
#include <linux/uuid.h>
#include <linux/ras.h>
#include <acpi/actbl1.h>
#include <acpi/ghes.h>
#include <acpi/apei.h>
#include <asm/tlbflush.h>
#include <ras/ras_event.h>
#include "apei-internal.h"
@ -80,6 +84,11 @@
((struct acpi_hest_generic_status *) \
((struct ghes_estatus_node *)(estatus_node) + 1))
static inline bool is_hest_type_generic_v2(struct ghes *ghes)
{
return ghes->generic->header.type == ACPI_HEST_TYPE_GENERIC_ERROR_V2;
}
/*
* This driver isn't really modular, however for the time being,
* continuing to use module_param is the easiest way to remain
@ -110,11 +119,7 @@ static DEFINE_MUTEX(ghes_list_mutex);
* Two virtual pages are used, one for IRQ/PROCESS context, the other for
* NMI context (optionally).
*/
#ifdef CONFIG_HAVE_ACPI_APEI_NMI
#define GHES_IOREMAP_PAGES 2
#else
#define GHES_IOREMAP_PAGES 1
#endif
#define GHES_IOREMAP_IRQ_PAGE(base) (base)
#define GHES_IOREMAP_NMI_PAGE(base) ((base) + PAGE_SIZE)
@ -133,6 +138,8 @@ static unsigned long ghes_estatus_pool_size_request;
static struct ghes_estatus_cache *ghes_estatus_caches[GHES_ESTATUS_CACHES_SIZE];
static atomic_t ghes_estatus_cache_alloced;
static int ghes_panic_timeout __read_mostly = 30;
static int ghes_ioremap_init(void)
{
ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES,
@ -153,10 +160,14 @@ static void ghes_ioremap_exit(void)
static void __iomem *ghes_ioremap_pfn_nmi(u64 pfn)
{
unsigned long vaddr;
phys_addr_t paddr;
pgprot_t prot;
vaddr = (unsigned long)GHES_IOREMAP_NMI_PAGE(ghes_ioremap_area->addr);
ioremap_page_range(vaddr, vaddr + PAGE_SIZE,
pfn << PAGE_SHIFT, PAGE_KERNEL);
paddr = pfn << PAGE_SHIFT;
prot = arch_apei_get_mem_attribute(paddr);
ioremap_page_range(vaddr, vaddr + PAGE_SIZE, paddr, prot);
return (void __iomem *)vaddr;
}
@ -240,6 +251,16 @@ static int ghes_estatus_pool_expand(unsigned long len)
return 0;
}
static int map_gen_v2(struct ghes *ghes)
{
return apei_map_generic_address(&ghes->generic_v2->read_ack_register);
}
static void unmap_gen_v2(struct ghes *ghes)
{
apei_unmap_generic_address(&ghes->generic_v2->read_ack_register);
}
static struct ghes *ghes_new(struct acpi_hest_generic *generic)
{
struct ghes *ghes;
@ -249,10 +270,17 @@ static struct ghes *ghes_new(struct acpi_hest_generic *generic)
ghes = kzalloc(sizeof(*ghes), GFP_KERNEL);
if (!ghes)
return ERR_PTR(-ENOMEM);
ghes->generic = generic;
if (is_hest_type_generic_v2(ghes)) {
rc = map_gen_v2(ghes);
if (rc)
goto err_free;
}
rc = apei_map_generic_address(&generic->error_status_address);
if (rc)
goto err_free;
goto err_unmap_read_ack_addr;
error_block_length = generic->error_block_length;
if (error_block_length > GHES_ESTATUS_MAX_SIZE) {
pr_warning(FW_WARN GHES_PFX
@ -264,13 +292,16 @@ static struct ghes *ghes_new(struct acpi_hest_generic *generic)
ghes->estatus = kmalloc(error_block_length, GFP_KERNEL);
if (!ghes->estatus) {
rc = -ENOMEM;
goto err_unmap;
goto err_unmap_status_addr;
}
return ghes;
err_unmap:
err_unmap_status_addr:
apei_unmap_generic_address(&generic->error_status_address);
err_unmap_read_ack_addr:
if (is_hest_type_generic_v2(ghes))
unmap_gen_v2(ghes);
err_free:
kfree(ghes);
return ERR_PTR(rc);
@ -280,6 +311,8 @@ static void ghes_fini(struct ghes *ghes)
{
kfree(ghes->estatus);
apei_unmap_generic_address(&ghes->generic->error_status_address);
if (is_hest_type_generic_v2(ghes))
unmap_gen_v2(ghes);
}
static inline int ghes_severity(int severity)
@ -400,8 +433,7 @@ static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int
unsigned long pfn;
int flags = -1;
int sec_sev = ghes_severity(gdata->error_severity);
struct cper_sec_mem_err *mem_err;
mem_err = (struct cper_sec_mem_err *)(gdata + 1);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
if (!(mem_err->validation_bits & CPER_MEM_VALID_PA))
return;
@ -432,14 +464,22 @@ static void ghes_do_proc(struct ghes *ghes,
int sev, sec_sev;
struct acpi_hest_generic_data *gdata;
guid_t *sec_type;
guid_t *fru_id = &NULL_UUID_LE;
char *fru_text = "";
sev = ghes_severity(estatus->error_severity);
apei_estatus_for_each_section(estatus, gdata) {
sec_type = (guid_t *)gdata->section_type;
sec_sev = ghes_severity(gdata->error_severity);
if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
fru_id = (guid_t *)gdata->fru_id;
if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
fru_text = gdata->fru_text;
if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err;
mem_err = (struct cper_sec_mem_err *)(gdata+1);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
ghes_edac_report_mem_error(ghes, sev, mem_err);
arch_apei_report_mem_error(sev, mem_err);
@ -447,8 +487,8 @@ static void ghes_do_proc(struct ghes *ghes,
}
#ifdef CONFIG_ACPI_APEI_PCIEAER
else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
struct cper_sec_pcie *pcie_err;
pcie_err = (struct cper_sec_pcie *)(gdata+1);
struct cper_sec_pcie *pcie_err = acpi_hest_get_payload(gdata);
if (sev == GHES_SEV_RECOVERABLE &&
sec_sev == GHES_SEV_RECOVERABLE &&
pcie_err->validation_bits & CPER_PCIE_VALID_DEVICE_ID &&
@ -477,6 +517,17 @@ static void ghes_do_proc(struct ghes *ghes,
}
#endif
else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
struct cper_sec_proc_arm *err = acpi_hest_get_payload(gdata);
log_arm_hw_error(err);
} else {
void *err = acpi_hest_get_payload(gdata);
log_non_standard_event(sec_type, fru_id, fru_text,
sec_sev, err,
gdata->error_data_length);
}
}
}
@ -649,6 +700,31 @@ static void ghes_estatus_cache_add(
rcu_read_unlock();
}
static int ghes_ack_error(struct acpi_hest_generic_v2 *gv2)
{
int rc;
u64 val = 0;
rc = apei_read(&val, &gv2->read_ack_register);
if (rc)
return rc;
val &= gv2->read_ack_preserve << gv2->read_ack_register.bit_offset;
val |= gv2->read_ack_write << gv2->read_ack_register.bit_offset;
return apei_write(val, &gv2->read_ack_register);
}
static void __ghes_panic(struct ghes *ghes)
{
__ghes_print_estatus(KERN_EMERG, ghes->generic, ghes->estatus);
/* reboot to log the error! */
if (!panic_timeout)
panic_timeout = ghes_panic_timeout;
panic("Fatal hardware error!");
}
static int ghes_proc(struct ghes *ghes)
{
int rc;
@ -656,11 +732,26 @@ static int ghes_proc(struct ghes *ghes)
rc = ghes_read_estatus(ghes, 0);
if (rc)
goto out;
if (ghes_severity(ghes->estatus->error_severity) >= GHES_SEV_PANIC) {
__ghes_panic(ghes);
}
if (!ghes_estatus_cached(ghes->estatus)) {
if (ghes_print_estatus(NULL, ghes->generic, ghes->estatus))
ghes_estatus_cache_add(ghes->generic, ghes->estatus);
}
ghes_do_proc(ghes, ghes->estatus);
/*
* GHESv2 type HEST entries introduce support for error acknowledgment,
* so only acknowledge the error if this support is present.
*/
if (is_hest_type_generic_v2(ghes)) {
rc = ghes_ack_error(ghes->generic_v2);
if (rc)
return rc;
}
out:
ghes_clear_estatus(ghes);
return rc;
@ -722,6 +813,55 @@ static struct notifier_block ghes_notifier_hed = {
.notifier_call = ghes_notify_hed,
};
#ifdef CONFIG_ACPI_APEI_SEA
static LIST_HEAD(ghes_sea);
/*
* Return 0 only if one of the SEA error sources successfully reported an error
* record sent from the firmware.
*/
int ghes_notify_sea(void)
{
struct ghes *ghes;
int ret = -ENOENT;
rcu_read_lock();
list_for_each_entry_rcu(ghes, &ghes_sea, list) {
if (!ghes_proc(ghes))
ret = 0;
}
rcu_read_unlock();
return ret;
}
static void ghes_sea_add(struct ghes *ghes)
{
mutex_lock(&ghes_list_mutex);
list_add_rcu(&ghes->list, &ghes_sea);
mutex_unlock(&ghes_list_mutex);
}
static void ghes_sea_remove(struct ghes *ghes)
{
mutex_lock(&ghes_list_mutex);
list_del_rcu(&ghes->list);
mutex_unlock(&ghes_list_mutex);
synchronize_rcu();
}
#else /* CONFIG_ACPI_APEI_SEA */
static inline void ghes_sea_add(struct ghes *ghes)
{
pr_err(GHES_PFX "ID: %d, trying to add SEA notification which is not supported\n",
ghes->generic->header.source_id);
}
static inline void ghes_sea_remove(struct ghes *ghes)
{
pr_err(GHES_PFX "ID: %d, trying to remove SEA notification which is not supported\n",
ghes->generic->header.source_id);
}
#endif /* CONFIG_ACPI_APEI_SEA */
#ifdef CONFIG_HAVE_ACPI_APEI_NMI
/*
* printk is not safe in NMI context. So in NMI handler, we allocate
@ -742,8 +882,6 @@ static atomic_t ghes_in_nmi = ATOMIC_INIT(0);
static LIST_HEAD(ghes_nmi);
static int ghes_panic_timeout __read_mostly = 30;
static void ghes_proc_in_irq(struct irq_work *irq_work)
{
struct llist_node *llnode, *next;
@ -829,18 +967,6 @@ static void __process_error(struct ghes *ghes)
#endif
}
static void __ghes_panic(struct ghes *ghes)
{
oops_begin();
ghes_print_queued_estatus();
__ghes_print_estatus(KERN_EMERG, ghes->generic, ghes->estatus);
/* reboot to log the error! */
if (panic_timeout == 0)
panic_timeout = ghes_panic_timeout;
panic("Fatal hardware error!");
}
static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
{
struct ghes *ghes;
@ -858,8 +984,11 @@ static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
}
sev = ghes_severity(ghes->estatus->error_severity);
if (sev >= GHES_SEV_PANIC)
if (sev >= GHES_SEV_PANIC) {
oops_begin();
ghes_print_queued_estatus();
__ghes_panic(ghes);
}
if (!(ghes->flags & GHES_TO_CLEAR))
continue;
@ -970,6 +1099,14 @@ static int ghes_probe(struct platform_device *ghes_dev)
case ACPI_HEST_NOTIFY_GPIO:
break;
case ACPI_HEST_NOTIFY_SEA:
if (!IS_ENABLED(CONFIG_ACPI_APEI_SEA)) {
pr_warn(GHES_PFX "Generic hardware error source: %d notified via SEA is not supported\n",
generic->header.source_id);
rc = -ENOTSUPP;
goto err;
}
break;
case ACPI_HEST_NOTIFY_NMI:
if (!IS_ENABLED(CONFIG_HAVE_ACPI_APEI_NMI)) {
pr_warn(GHES_PFX "Generic hardware error source: %d notified via NMI interrupt is not supported!\n",
@ -1038,6 +1175,9 @@ static int ghes_probe(struct platform_device *ghes_dev)
mutex_unlock(&ghes_list_mutex);
break;
case ACPI_HEST_NOTIFY_SEA:
ghes_sea_add(ghes);
break;
case ACPI_HEST_NOTIFY_NMI:
ghes_nmi_add(ghes);
break;
@ -1046,6 +1186,9 @@ static int ghes_probe(struct platform_device *ghes_dev)
}
platform_set_drvdata(ghes_dev, ghes);
/* Handle any pending errors right away */
ghes_proc(ghes);
return 0;
err_edac_unreg:
ghes_edac_unregister(ghes);
@ -1085,6 +1228,9 @@ static int ghes_remove(struct platform_device *ghes_dev)
synchronize_rcu();
break;
case ACPI_HEST_NOTIFY_SEA:
ghes_sea_remove(ghes);
break;
case ACPI_HEST_NOTIFY_NMI:
ghes_nmi_remove(ghes);
break;

7
drivers/acpi/apei/hest.c
View file

@ -52,6 +52,7 @@ static const int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = {
[ACPI_HEST_TYPE_AER_ENDPOINT] = sizeof(struct acpi_hest_aer),
[ACPI_HEST_TYPE_AER_BRIDGE] = sizeof(struct acpi_hest_aer_bridge),
[ACPI_HEST_TYPE_GENERIC_ERROR] = sizeof(struct acpi_hest_generic),
[ACPI_HEST_TYPE_GENERIC_ERROR_V2] = sizeof(struct acpi_hest_generic_v2),
};
static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
@ -141,7 +142,8 @@ static int __init hest_parse_ghes_count(struct acpi_hest_header *hest_hdr, void
{
int *count = data;
if (hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR)
if (hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR ||
hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR_V2)
(*count)++;
return 0;
}
@ -152,7 +154,8 @@ static int __init hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data)
struct ghes_arr *ghes_arr = data;
int rc, i;
if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR)
if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR &&
hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR_V2)
return 0;
if (!((struct acpi_hest_generic *)hest_hdr)->enabled)

15
drivers/acpi/arm64/iort.c
View file

@ -234,21 +234,6 @@ static struct acpi_iort_node *iort_scan_node(enum acpi_iort_node_type type,
return NULL;
}
static acpi_status
iort_match_type_callback(struct acpi_iort_node *node, void *context)
{
return AE_OK;
}
bool iort_node_match(u8 type)
{
struct acpi_iort_node *node;
node = iort_scan_node(type, iort_match_type_callback, NULL);
return node != NULL;
}
static acpi_status iort_match_node_callback(struct acpi_iort_node *node,
void *context)
{