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When checking addresses in APEI action entries for validity, allow 

access the mmcfg space - some error injection functions need to do
 this.
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Merge tag 'please-pull-einj-mmcfg' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras into x86/ras

Pull RAS update from Tony Luck:

  "When checking addresses in APEI action entries for validity, allow
   access to the mmcfg space - some error injection functions need to do
   this."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-01-15 11:30:57 +01:00
parent 37e4d3b951 d91525eb8e
commit 93d76c8026
2 changed files with 54 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
arch/x86/pci/mmconfig-shared.c
View File

@ -610,6 +610,32 @@ static int __init pci_parse_mcfg(struct acpi_table_header *header)
return 0;
}
#ifdef CONFIG_ACPI_APEI
extern int (*arch_apei_filter_addr)(int (*func)(__u64 start, __u64 size,
void *data), void *data);
static int pci_mmcfg_for_each_region(int (*func)(__u64 start, __u64 size,
void *data), void *data)
{
struct pci_mmcfg_region *cfg;
int rc;
if (list_empty(&pci_mmcfg_list))
return 0;
list_for_each_entry(cfg, &pci_mmcfg_list, list) {
rc = func(cfg->res.start, resource_size(&cfg->res), data);
if (rc)
return rc;
}
return 0;
}
#define set_apei_filter() (arch_apei_filter_addr = pci_mmcfg_for_each_region)
#else
#define set_apei_filter()
#endif
static void __init __pci_mmcfg_init(int early)
{
pci_mmcfg_reject_broken(early);
@ -644,6 +670,8 @@ void __init pci_mmcfg_early_init(void)
else
acpi_sfi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
__pci_mmcfg_init(1);
set_apei_filter();
}
}

32
drivers/acpi/apei/apei-base.c
View File

@ -449,7 +449,7 @@ int apei_resources_sub(struct apei_resources *resources1,
}
EXPORT_SYMBOL_GPL(apei_resources_sub);
static int apei_get_nvs_callback(__u64 start, __u64 size, void *data)
static int apei_get_res_callback(__u64 start, __u64 size, void *data)
{
struct apei_resources *resources = data;
return apei_res_add(&resources->iomem, start, size);
@ -457,7 +457,15 @@ static int apei_get_nvs_callback(__u64 start, __u64 size, void *data)
static int apei_get_nvs_resources(struct apei_resources *resources)
{
return acpi_nvs_for_each_region(apei_get_nvs_callback, resources);
return acpi_nvs_for_each_region(apei_get_res_callback, resources);
}
int (*arch_apei_filter_addr)(int (*func)(__u64 start, __u64 size,
void *data), void *data);
static int apei_get_arch_resources(struct apei_resources *resources)
{
return arch_apei_filter_addr(apei_get_res_callback, resources);
}
/*
@ -470,7 +478,7 @@ int apei_resources_request(struct apei_resources *resources,
{
struct apei_res *res, *res_bak = NULL;
struct resource *r;
struct apei_resources nvs_resources;
struct apei_resources nvs_resources, arch_res;
int rc;
rc = apei_resources_sub(resources, &apei_resources_all);
@ -485,10 +493,20 @@ int apei_resources_request(struct apei_resources *resources,
apei_resources_init(&nvs_resources);
rc = apei_get_nvs_resources(&nvs_resources);
if (rc)
goto res_fini;
goto nvs_res_fini;
rc = apei_resources_sub(resources, &nvs_resources);
if (rc)
goto res_fini;
goto nvs_res_fini;
if (arch_apei_filter_addr) {
apei_resources_init(&arch_res);
rc = apei_get_arch_resources(&arch_res);
if (rc)
goto arch_res_fini;
rc = apei_resources_sub(resources, &arch_res);
if (rc)
goto arch_res_fini;
}
rc = -EINVAL;
list_for_each_entry(res, &resources->iomem, list) {
@ -536,7 +554,9 @@ err_unmap_iomem:
break;
release_mem_region(res->start, res->end - res->start);
}
res_fini:
arch_res_fini:
apei_resources_fini(&arch_res);
nvs_res_fini:
apei_resources_fini(&nvs_resources);
return rc;
}