From mboxrd@z Thu Jan 1 00:00:00 1970 From: matt@codeblueprint.co.uk (Matt Fleming) Date: Thu, 21 Jan 2016 16:20:56 +0000 Subject: [PATCH v3 20/21] efi: stub: use high allocation for converted command line In-Reply-To: <1452518355-4606-22-git-send-email-ard.biesheuvel@linaro.org> References: <1452518355-4606-1-git-send-email-ard.biesheuvel@linaro.org> <1452518355-4606-22-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <20160121162056.GG2510@codeblueprint.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, 11 Jan, at 02:19:14PM, Ard Biesheuvel wrote: > Before we can move the command line processing before the allocation > of the kernel, which is required for detecting the 'nokaslr' option > which controls that allocation, move the converted command line higher > up in memory, to prevent it from interfering with the kernel itself. > > Since x86 needs the address to fit in 32 bits, use UINT_MAX as the upper > bound there. Otherwise, use ULONG_MAX (i.e., no limit) > > Cc: Matt Fleming > Signed-off-by: Ard Biesheuvel > --- > arch/x86/include/asm/efi.h | 2 ++ > drivers/firmware/efi/libstub/efi-stub-helper.c | 14 +++++++++++++- > 2 files changed, 15 insertions(+), 1 deletion(-) Reviewed-by: Matt Fleming