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Date: Mon, 3 Jun 2024 19:10:10 +0200
From: Borislav Petkov <bp@alien8.de>
To: "Kalra, Ashish" <ashish.kalra@amd.com>
Cc: Mike Rapoport <rppt@kernel.org>, tglx@linutronix.de, mingo@redhat.com,
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Subject: Re: [PATCH v7 1/3] efi/x86: Fix EFI memory map corruption with kexec
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On Mon, Jun 03, 2024 at 12:05:45PM -0500, Kalra, Ashish wrote:
> Re-sending this, last response got garbled.

And this got linewrapped.

Thunderbird section in Documentation/process/email-clients.rst.

> index f0cc00032751..6f398c59278a 100644
> --- a/arch/x86/platform/efi/quirks.c
> +++ b/arch/x86/platform/efi/quirks.c
> @@ -255,15 +255,39 @@ void __init efi_arch_mem_reserve(phys_addr_t addr=
, u64
> size)

^^^

> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 struct efi_memory_map_data d=
ata =3D { 0 };
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 struct efi_mem_range mr;
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 efi_memory_desc_t md;
> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 int num_entries;
> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 int num_entries, ret;
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 void *new;
>=20
> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (efi_mem_desc_lookup(addr, &md=
) ||
> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 md.type !=
=3D EFI_BOOT_SERVICES_DATA) {
> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 /*
> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 * efi_mem_reserve() is used=
 to reserve boot service memory, eg.
> bgrt,

^^^

--=20
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette