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Re: [Xen-devel] [PATCH v7 17/36] efi: Update efi_mem_type() to return an error rather than 0
- To: Tom Lendacky <thomas.lendacky@xxxxxxx>
- From: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
- Date: Thu, 22 Jun 2017 11:03:13 +0100
- Cc: linux-efi@xxxxxxxxxxxxxxx, Brijesh Singh <brijesh.singh@xxxxxxx>, Toshimitsu Kani <toshi.kani@xxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-mm@xxxxxxxxx, Radim Krčmář <rkrcmar@xxxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Larry Woodman <lwoodman@xxxxxxxxxx>, linux-arch@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, Jonathan Corbet <corbet@xxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>, Dave Young <dyoung@xxxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, kexec@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>
- Delivery-date: Thu, 22 Jun 2017 10:03:22 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Fri, 16 Jun, at 01:53:06PM, Tom Lendacky wrote:
> The efi_mem_type() function currently returns a 0, which maps to
> EFI_RESERVED_TYPE, if the function is unable to find a memmap entry for
> the supplied physical address. Returning EFI_RESERVED_TYPE implies that
> a memmap entry exists, when it doesn't. Instead of returning 0, change
> the function to return a negative error value when no memmap entry is
> found.
>
> Reviewed-by: Borislav Petkov <bp@xxxxxxx>
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
> ---
> arch/ia64/kernel/efi.c | 4 ++--
> arch/x86/platform/efi/efi.c | 6 +++---
> include/linux/efi.h | 2 +-
> 3 files changed, 6 insertions(+), 6 deletions(-)
Reviewed-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
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