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Message-Id: <1357219085-4312-1-git-send-email-matt@console-pimps.org> Date: Thu, 3 Jan 2013 13:18:03 +0000 From: Matt Fleming <matt@...sole-pimps.org> To: Steve Langasek <steve.langasek@...onical.com>, Matthew Garrett <mjg59@...f.ucam.org> Cc: linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>, Olof Johansson <olof@...om.net>, Tony Luck <tony.luck@...el.com>, Matt Fleming <matt.fleming@...el.com> Subject: [RFC PATCH 0/2] EFI facilities bitfield From: Matt Fleming <matt.fleming@...el.com> Various users expect different semantics from 'efi_enabled', and one variable can't be all things to all users. Introduce an EFI facilities bitfield, which informs users what EFI initialisation steps were completed successfully (are the system/config tables mapped, can we invoke runtime services, etc?) and allows users to clearly document which pieces of EFI firmware functionality they're using. The immediate motivation for this patch series is the bug report at, https://bugzilla.kernel.org/show_bug.cgi?id=47121 Drivers need a new means of detecting whether they're running on an EFI machine, as sadly the expression, if (!efi_enabled) hasn't been a sufficient condition for quite some time. This series has only seen minimal runtime testing since it's an RFC and is intended to start a discussion. Matt Fleming (2): efi: Make 'efi_enabled' a function to query EFI facilities samsung-laptop: Disable on EFI hardware arch/x86/include/asm/efi.h | 1 + arch/x86/kernel/reboot.c | 2 +- arch/x86/kernel/setup.c | 28 ++++++++--------- arch/x86/platform/efi/efi.c | 55 ++++++++++++++++++++-------------- drivers/acpi/osl.c | 2 +- drivers/firmware/dmi_scan.c | 2 +- drivers/firmware/efivars.c | 4 +-- drivers/firmware/iscsi_ibft_find.c | 2 +- drivers/gpu/drm/radeon/radeon_device.c | 3 +- drivers/platform/x86/ibm_rtl.c | 2 +- drivers/platform/x86/samsung-laptop.c | 3 ++ drivers/scsi/isci/init.c | 2 +- include/linux/efi.h | 24 +++++++++++---- init/main.c | 4 +-- 14 files changed, 80 insertions(+), 54 deletions(-) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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