diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 7027d6060711..12f29500e899 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4454,13 +4454,24 @@ static void __init init_iommu_pm_ops(void) static inline void init_iommu_pm_ops(void) {} #endif /* CONFIG_PM */ +static int rmrr_sanity_check(struct acpi_dmar_reserved_memory *rmrr) +{ + if (!IS_ALIGNED(rmrr->base_address, PAGE_SIZE) || + !IS_ALIGNED(rmrr->end_address + 1, PAGE_SIZE) || + rmrr->end_address <= rmrr->base_address || + arch_rmrr_sanity_check(rmrr)) + return -EINVAL; + + return 0; +} + int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg) { struct acpi_dmar_reserved_memory *rmrr; struct dmar_rmrr_unit *rmrru; rmrr = (struct acpi_dmar_reserved_memory *)header; - if (arch_rmrr_sanity_check(rmrr)) + if (rmrr_sanity_check(rmrr)) WARN_TAINT(1, TAINT_FIRMWARE_WORKAROUND, "Your BIOS is broken; bad RMRR [%#018Lx-%#018Lx]\n" "BIOS vendor: %s; Ver: %s; Product Version: %s\n", |