diff options
Diffstat (limited to 'arch/x86/kernel/resource.c')
| -rw-r--r-- | arch/x86/kernel/resource.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c index 9b9fb7882c20..bba1abd05bfe 100644 --- a/arch/x86/kernel/resource.c +++ b/arch/x86/kernel/resource.c @@ -1,6 +1,8 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/ioport.h> +#include <linux/printk.h> #include <asm/e820/api.h> +#include <asm/pci_x86.h> static void resource_clip(struct resource *res, resource_size_t start, resource_size_t end) @@ -27,12 +29,23 @@ static void remove_e820_regions(struct resource *avail) { int i; struct e820_entry *entry; + u64 e820_start, e820_end; + struct resource orig = *avail; + + if (!pci_use_e820) + return; for (i = 0; i < e820_table->nr_entries; i++) { entry = &e820_table->entries[i]; + e820_start = entry->addr; + e820_end = entry->addr + entry->size - 1; - resource_clip(avail, entry->addr, - entry->addr + entry->size - 1); + resource_clip(avail, e820_start, e820_end); + if (orig.start != avail->start || orig.end != avail->end) { + pr_info("clipped %pR to %pR for e820 entry [mem %#010Lx-%#010Lx]\n", + &orig, avail, e820_start, e820_end); + orig = *avail; + } } } |