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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrei Borzenkov <arvidjaar@gmail.com>
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Date: Thu, 26 Nov 2015 19:50:42 +0300
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Subject: [PATCH] efi: really mark memory of unknown type as reserved
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9be4c45dbe3c877d1f4856e99ee15133c6cd2261 added switch case between
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fall through cases, causing all memory regions of unknown type to be
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marked as available.
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Move default case into its own block and add explicit FALLTHROUGH
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annotation.
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Reported by Elliott, Robert (Persistent Memory) <elliott@hpe.com>
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(cherry picked from commit 3d2c8048da7db334fd6d57b27304ac765fd4cd67)
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Resolves: rhbz#1288608
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---
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grub-core/mmap/efi/mmap.c | 13 +++++++++----
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1 file changed, 9 insertions(+), 4 deletions(-)
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diff --git a/grub-core/mmap/efi/mmap.c b/grub-core/mmap/efi/mmap.c
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index a77efe81d0c..900a4d6598c 100644
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--- a/grub-core/mmap/efi/mmap.c
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+++ b/grub-core/mmap/efi/mmap.c
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@@ -73,6 +73,7 @@ grub_efi_mmap_iterate (grub_memory_hook_t hook, void *hook_data,
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GRUB_MEMORY_AVAILABLE, hook_data);
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break;
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}
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+ /* FALLTHROUGH */
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case GRUB_EFI_RUNTIME_SERVICES_CODE:
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hook (desc->physical_start, desc->num_pages * 4096,
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GRUB_MEMORY_CODE, hook_data);
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@@ -83,10 +84,6 @@ grub_efi_mmap_iterate (grub_memory_hook_t hook, void *hook_data,
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GRUB_MEMORY_BADRAM, hook_data);
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break;
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- default:
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- grub_printf ("Unknown memory type %d, considering reserved\n",
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- desc->type);
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-
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case GRUB_EFI_BOOT_SERVICES_DATA:
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if (!avoid_efi_boot_services)
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{
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@@ -94,6 +91,7 @@ grub_efi_mmap_iterate (grub_memory_hook_t hook, void *hook_data,
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GRUB_MEMORY_AVAILABLE, hook_data);
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break;
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}
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+ /* FALLTHROUGH */
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case GRUB_EFI_RESERVED_MEMORY_TYPE:
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case GRUB_EFI_RUNTIME_SERVICES_DATA:
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case GRUB_EFI_MEMORY_MAPPED_IO:
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@@ -119,6 +117,13 @@ grub_efi_mmap_iterate (grub_memory_hook_t hook, void *hook_data,
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hook (desc->physical_start, desc->num_pages * 4096,
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GRUB_MEMORY_NVS, hook_data);
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break;
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+
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+ default:
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+ grub_printf ("Unknown memory type %d, considering reserved\n",
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+ desc->type);
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+ hook (desc->physical_start, desc->num_pages * 4096,
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+ GRUB_MEMORY_RESERVED, hook_data);
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+ break;
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}
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}
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