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From e75fdee420a7ad95e9a465c9699adc2e2e970440 Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Tue, 26 Mar 2013 10:34:56 +0000
Subject: * grub-core/kern/efi/mm.c (grub_efi_finish_boot_services):
Try terminating EFI services several times due to quirks in some
implementations.
---
(limited to 'grub-core/kern/efi/mm.c')
diff --git a/grub-core/kern/efi/mm.c b/grub-core/kern/efi/mm.c
index 351317b..77c9384 100644
--- a/grub-core/kern/efi/mm.c
+++ b/grub-core/kern/efi/mm.c
@@ -160,27 +160,41 @@ grub_efi_finish_boot_services (grub_efi_uintn_t *outbuf_size, void *outbuf,
apple, sizeof (apple)) == 0);
#endif
- if (grub_efi_get_memory_map (&finish_mmap_size, finish_mmap_buf, &finish_key,
- &finish_desc_size, &finish_desc_version) < 0)
- return grub_error (GRUB_ERR_IO, "couldn't retrieve memory map");
+ while (1)
+ {
+ if (grub_efi_get_memory_map (&finish_mmap_size, finish_mmap_buf, &finish_key,
+ &finish_desc_size, &finish_desc_version) < 0)
+ return grub_error (GRUB_ERR_IO, "couldn't retrieve memory map");
- if (outbuf && *outbuf_size < finish_mmap_size)
- return grub_error (GRUB_ERR_IO, "memory map buffer is too small");
+ if (outbuf && *outbuf_size < finish_mmap_size)
+ return grub_error (GRUB_ERR_IO, "memory map buffer is too small");
- finish_mmap_buf = grub_malloc (finish_mmap_size);
- if (!finish_mmap_buf)
- return grub_errno;
+ finish_mmap_buf = grub_malloc (finish_mmap_size);
+ if (!finish_mmap_buf)
+ return grub_errno;
- if (grub_efi_get_memory_map (&finish_mmap_size, finish_mmap_buf, &finish_key,
- &finish_desc_size, &finish_desc_version) <= 0)
- return grub_error (GRUB_ERR_IO, "couldn't retrieve memory map");
+ if (grub_efi_get_memory_map (&finish_mmap_size, finish_mmap_buf, &finish_key,
+ &finish_desc_size, &finish_desc_version) <= 0)
+ {
+ grub_free (finish_mmap_buf);
+ return grub_error (GRUB_ERR_IO, "couldn't retrieve memory map");
+ }
- b = grub_efi_system_table->boot_services;
- status = efi_call_2 (b->exit_boot_services, grub_efi_image_handle,
- finish_key);
- if (status != GRUB_EFI_SUCCESS)
- return grub_error (GRUB_ERR_IO, "couldn't terminate EFI services");
+ b = grub_efi_system_table->boot_services;
+ status = efi_call_2 (b->exit_boot_services, grub_efi_image_handle,
+ finish_key);
+ if (status == GRUB_EFI_SUCCESS)
+ break;
+ if (status != GRUB_EFI_INVALID_PARAMETER)
+ {
+ grub_free (finish_mmap_buf);
+ return grub_error (GRUB_ERR_IO, "couldn't terminate EFI services");
+ }
+
+ grub_free (finish_mmap_buf);
+ grub_printf ("Trying to terminate EFI services again\n");
+ }
grub_efi_is_finished = 1;
if (outbuf_size)
*outbuf_size = finish_mmap_size;
--
cgit v0.9.0.2
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