2016-04-21 11:09:35

by Matt Fleming

[permalink] [raw]
Subject: [PATCH] x86/efi: Remove the always true EFI_DEBUG symbol

This symbol is always set which makes it useless. Additionally we have
a kernel command-line switch, efi=debug, which actually controls the
printing of the memory map.

Reported-by: Robert Elliott <[email protected]>
Cc: Borislav Petkov <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>
---
arch/x86/platform/efi/efi.c | 4 ----
1 file changed, 4 deletions(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index dde46cd78b8f..f93545e7dc54 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -54,8 +54,6 @@
#include <asm/rtc.h>
#include <asm/uv/uv.h>

-#define EFI_DEBUG
-
static struct efi efi_phys __initdata;
static efi_system_table_t efi_systab __initdata;

@@ -222,7 +220,6 @@ int __init efi_memblock_x86_reserve_range(void)

void __init efi_print_memmap(void)
{
-#ifdef EFI_DEBUG
efi_memory_desc_t *md;
int i = 0;

@@ -235,7 +232,6 @@ void __init efi_print_memmap(void)
md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1,
(md->num_pages >> (20 - EFI_PAGE_SHIFT)));
}
-#endif /* EFI_DEBUG */
}

void __init efi_unmap_memmap(void)
--
2.7.3


2016-04-21 12:46:05

by Borislav Petkov

[permalink] [raw]
Subject: Re: [PATCH] x86/efi: Remove the always true EFI_DEBUG symbol

On Thu, Apr 21, 2016 at 12:09:30PM +0100, Matt Fleming wrote:
> This symbol is always set which makes it useless. Additionally we have
> a kernel command-line switch, efi=debug, which actually controls the
> printing of the memory map.
>
> Reported-by: Robert Elliott <[email protected]>
> Cc: Borislav Petkov <[email protected]>
> Signed-off-by: Matt Fleming <[email protected]>
> ---
> arch/x86/platform/efi/efi.c | 4 ----
> 1 file changed, 4 deletions(-)

Acked-by: Borislav Petkov <[email protected]>

Btw, there's also

arch/ia64/kernel/efi.c:45:#define EFI_DEBUG 0
arch/ia64/kernel/efi.c:399:#if EFI_DEBUG
arch/ia64/kernel/efi.c:559:#if EFI_DEBUG

I'm assuming you want to put that behind "if (efi_enabled(EFI_DBG))" too...

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.

2016-04-21 12:48:25

by Matt Fleming

[permalink] [raw]
Subject: Re: [PATCH] x86/efi: Remove the always true EFI_DEBUG symbol

On Thu, 21 Apr, at 02:45:42PM, Borislav Petkov wrote:
> On Thu, Apr 21, 2016 at 12:09:30PM +0100, Matt Fleming wrote:
> > This symbol is always set which makes it useless. Additionally we have
> > a kernel command-line switch, efi=debug, which actually controls the
> > printing of the memory map.
> >
> > Reported-by: Robert Elliott <[email protected]>
> > Cc: Borislav Petkov <[email protected]>
> > Signed-off-by: Matt Fleming <[email protected]>
> > ---
> > arch/x86/platform/efi/efi.c | 4 ----
> > 1 file changed, 4 deletions(-)
>
> Acked-by: Borislav Petkov <[email protected]>
>
> Btw, there's also
>
> arch/ia64/kernel/efi.c:45:#define EFI_DEBUG 0
> arch/ia64/kernel/efi.c:399:#if EFI_DEBUG
> arch/ia64/kernel/efi.c:559:#if EFI_DEBUG
>
> I'm assuming you want to put that behind "if (efi_enabled(EFI_DBG))" too...

Hmm.. Yes, that'd be a good idea. I am in the process of setting up an
Itanium box or two for runtime EFI testing, so I'll make a note of
this task.