* Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> wrote:
> From: Peter Jones <pjones@xxxxxxxxxx>
>
> Add a comment documenting why EFI GUIDs are laid out like they are.
> Ideally I'd like to change all the ", " to "," too, but right now the
> format is such that checkpatch won't complain with new ones, and staring
> at checkpatch didn't get me anywhere towards making that work.
>
> Signed-off-by: Peter Jones <pjones@xxxxxxxxxx>
> Cc: Joe Perches <joe@xxxxxxxxxxx>
> Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
> ---
> include/linux/efi.h | 17 ++++++++++++++++-
> 1 file changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/efi.h b/include/linux/efi.h
> index f196dd0b0f2f..03009695760d 100644
> --- a/include/linux/efi.h
> +++ b/include/linux/efi.h
> @@ -536,7 +536,22 @@ typedef efi_status_t efi_query_variable_store_t(u32 attributes,
> void efi_native_runtime_setup(void);
>
> /*
> - * EFI Configuration Table and GUID definitions
> + * EFI Configuration Table and GUID definitions
> + *
> + * These should be formatted roughly like the ones in the UEFI SPEC has
> + * them. It makes them easier to grep for, and they look the same when
> + * you're staring at them. Here's the guide:
> + *
> + * GUID: 12345678-1234-1234-1234-123456789012
> + * Spec:
> + * #define EFI_SOME_PROTOCOL_GUID \
> + * {0x12345678,0x1234,0x1234,\
> + * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
> + * Here:
> + * #define SOME_PROTOCOL_GUID \
> + * EFI_GUID(0x12345678, 0x1234, 0x1234, \
> + * 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
> + * ^ tab ^tab ^ space
> */
> #define NULL_GUID \
> EFI_GUID(0x00000000, 0x0000, 0x0000, \
Btw., another possible way to organize the GUIDs would be to ignore checkpatch (we
should ignore checkpatch when it's wrong) and go for a nice table format:
#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
#define EFI_FILE_INFO_ID EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
/*
* This GUID is used to pass to the kernel proper the struct screen_info
* structure that was populated by the stub based on the GOP protocol instance
* associated with ConOut
*/
#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
This should look pretty nice if you have a large enough terminal window.
The advantage of such a table organization is that two weirdnesses immediately
showed up:
#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
#define EFI_FILE_INFO_ID EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
EFI_FILE_INFO_ID should probably be written as 0x09576e92. (I believe the GUID is
correct.) So we can write that as:
#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
The other weirdness is the misalignment of the '0xe' portion here:
#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
Am I correct that LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID is purely Linux kernel
internal, and that we can write 0xe as 0x0e?
The patch below implements this organization of the GUIDs on top of your patch.
Also note that it should still be easy to line up these lines with the spec, as I
left an extra space before the 'byte' portion of the table, so the table is
separated into two areas visually.
Thanks,
Ingo
---
Subject: fix
From: Ingo Molnar <mingo@xxxxxxxxxx>
Date: Mon Jun 27 12:37:05 CEST 2016
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
include/linux/efi.h | 128 ++++++++++------------------------------------------
1 file changed, 26 insertions(+), 102 deletions(-)
Index: tip/include/linux/efi.h
===================================================================
--- tip.orig/include/linux/efi.h
+++ tip/include/linux/efi.h
@@ -553,114 +553,38 @@ void efi_native_runtime_setup(void);
* 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
* ^ tab ^tab ^ space
*/
-#define NULL_GUID \
- EFI_GUID(0x00000000, 0x0000, 0x0000, \
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
-
-#define MPS_TABLE_GUID \
- EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \
- 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
-
-#define ACPI_TABLE_GUID \
- EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \
- 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
-
-#define ACPI_20_TABLE_GUID \
- EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \
- 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
-
-#define SMBIOS_TABLE_GUID \
- EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \
- 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
-
-#define SMBIOS3_TABLE_GUID \
- EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \
- 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
-
-#define SAL_SYSTEM_TABLE_GUID \
- EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \
- 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
-
-#define HCDP_TABLE_GUID \
- EFI_GUID(0xf951938d, 0x620b, 0x42ef, \
- 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
-
-#define UGA_IO_PROTOCOL_GUID \
- EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \
- 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
-
-#define EFI_GLOBAL_VARIABLE_GUID \
- EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \
- 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
-
-#define UV_SYSTEM_TABLE_GUID \
- EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \
- 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
-
-#define LINUX_EFI_CRASH_GUID \
- EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \
- 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
-
-#define LOADED_IMAGE_PROTOCOL_GUID \
- EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
- 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
-
-#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
- EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
- 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
-
-#define EFI_UGA_PROTOCOL_GUID \
- EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \
- 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
-
-#define EFI_PCI_IO_PROTOCOL_GUID \
- EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \
- 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
-
-#define EFI_FILE_INFO_ID \
- EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
- 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
-
-#define EFI_SYSTEM_RESOURCE_TABLE_GUID \
- EFI_GUID(0xb122a263, 0x3661, 0x4f68, \
- 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
-
-#define EFI_FILE_SYSTEM_GUID \
- EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \
- 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
-
-#define DEVICE_TREE_GUID \
- EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
- 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
-
-#define EFI_PROPERTIES_TABLE_GUID \
- EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \
- 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
-
-#define EFI_RNG_PROTOCOL_GUID \
- EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
- 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
-
-#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \
- EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \
- 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
-
-#define EFI_CONSOLE_OUT_DEVICE_GUID \
- EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \
- 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
+#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
+#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
+#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
+#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
+#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
+#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
+#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
+#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
+#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
+#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
+#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
+#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
+#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
+#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
+#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
+#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
/*
* This GUID is used to pass to the kernel proper the struct screen_info
* structure that was populated by the stub based on the GOP protocol instance
* associated with ConOut
*/
-#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \
- EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \
- 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
-
-#define LINUX_EFI_LOADER_ENTRY_GUID \
- EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \
- 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
+#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
+#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
typedef struct {
efi_guid_t guid;
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