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[PATCH v6 15/16] x86/init: disable pnpbios for X86_SUBARCH_INTEL_MID

From "Luis R. Rodriguez" <mcgrof@kernel.org>
Newsgroups linux.kernel
Subject [PATCH v6 15/16] x86/init: disable pnpbios for X86_SUBARCH_INTEL_MID
Date 2016-04-14 02:10 +0200
Message-ID <rnD19-1fm-31@gated-at.bofh.it> (permalink)
References <rnD18-1fm-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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As per hpa Intel MID platforms can also disable pnpbios [0].

As per 0-day, this bumps the vmlinux size using i386-tinyconfig as
follows:

TOTAL   TEXT   init.text   x86_early_init_platform_quirks()
-8      -8     -8          -8

[0] http://lkml.kernel.org/r/5702B5C2.7070101@zytor.com

v6: add 0-day size impact

Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
---
 arch/x86/kernel/platform-quirks.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kernel/platform-quirks.c b/arch/x86/kernel/platform-quirks.c
index ab643825a7aa..853919484340 100644
--- a/arch/x86/kernel/platform-quirks.c
+++ b/arch/x86/kernel/platform-quirks.c
@@ -16,10 +16,8 @@ void __init x86_early_init_platform_quirks(void)
 		break;
 	case X86_SUBARCH_XEN:
 	case X86_SUBARCH_LGUEST:
-		x86_platform.legacy.devices.pnpbios = 0;
-		x86_platform.legacy.rtc = 0;
-		break;
 	case X86_SUBARCH_INTEL_MID:
+		x86_platform.legacy.devices.pnpbios = 0;
 		x86_platform.legacy.rtc = 0;
 		break;
 	}
-- 
2.7.2

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Thread

[PATCH v6 00/16] x86: remove paravirt_enabled() "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 06/16] x86/init: use a platform legacy quirk for ebda "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 12/16] x86, ACPI: parse ACPI_FADT_LEGACY_DEVICES "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 11/16] pnpbios: replace paravirt_enabled() check with legacy device check "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 08/16] apm32: remove paravirt_enabled() use "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 07/16] tools/lguest: force disable tboot and apm "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 03/16] tools/lguest: make lguest launcher use X86_SUBARCH_LGUEST explicitly "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 01/16] x86/boot: enumerate documentation for the x86 hardware_subarch "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 16/16] x86/init: disable pnpbios and rtc for X86_SUBARCH_CE4100 "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 10/16] x86/cpu/intel: remove not needed paravirt_enabled() for f00f work around "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 14/16] x86/paravirt: remove paravirt_enabled() "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 15/16] x86/init: disable pnpbios for X86_SUBARCH_INTEL_MID "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 13/16] x86/init: rename ebda code file "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
  [PATCH v6 04/16] x86/rtc: replace paravirt rtc check with platform legacy quirk "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:10 +0200
    Re: [PATCH v6 04/16] x86/rtc: replace paravirt rtc check with  platform legacy quirk Juergen Gross <jgross@suse.com> - 2016-04-14 06:30 +0200
  [PATCH v6 07/16] tools/lguest: force disable tboot and apm "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:20 +0200
  [PATCH v6 05/16] x86, ACPI: move ACPI_FADT_NO_CMOS_RTC check to ACPI boot code "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:20 +0200
  [PATCH v6 12/16] x86, ACPI: parse ACPI_FADT_LEGACY_DEVICES "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-04-14 02:20 +0200

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