From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Richard Weinberger <richard@nod.at>
Subject: [PATCH 3.10 15/27] x86, espfix: Make espfix64 a Kconfig option, fix UML
Date: Tue, 5 Aug 2014 11:14:07 -0700 [thread overview]
Message-ID: <20140805181344.716256384@linuxfoundation.org> (raw)
In-Reply-To: <20140805181344.268039690@linuxfoundation.org>
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@zytor.com>
commit 197725de65477bc8509b41388157c1a2283542bb upstream.
Make espfix64 a hidden Kconfig option. This fixes the x86-64 UML
build which had broken due to the non-existence of init_espfix_bsp()
in UML: since UML uses its own Kconfig, this option does not appear in
the UML build.
This also makes it possible to make support for 16-bit segments a
configuration option, for the people who want to minimize the size of
the kernel.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/Kconfig | 4 ++++
arch/x86/kernel/Makefile | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
init/main.c | 2 +-
4 files changed, 7 insertions(+), 3 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -957,6 +957,10 @@ config VM86
XFree86 to initialize some video cards via BIOS. Disabling this
option saves about 6k.
+config X86_ESPFIX64
+ def_bool y
+ depends on X86_64
+
config TOSHIBA
tristate "Toshiba Laptop support"
depends on X86_32
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -27,7 +27,7 @@ obj-$(CONFIG_X86_64) += sys_x86_64.o x86
obj-y += syscall_$(BITS).o
obj-$(CONFIG_X86_64) += vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
-obj-$(CONFIG_X86_64) += espfix_64.o
+obj-$(CONFIG_X86_ESPFIX64) += espfix_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -267,7 +267,7 @@ notrace static void __cpuinit start_seco
/*
* Enable the espfix hack for this CPU
*/
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_ESPFIX64
init_espfix_ap();
#endif
--- a/init/main.c
+++ b/init/main.c
@@ -606,7 +606,7 @@ asmlinkage void __init start_kernel(void
if (efi_enabled(EFI_RUNTIME_SERVICES))
efi_enter_virtual_mode();
#endif
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_ESPFIX64
/* Should be run before the first non-init thread is created */
init_espfix_bsp();
#endif
next prev parent reply other threads:[~2014-08-05 18:22 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-05 18:13 [PATCH 3.10 00/27] 3.10.52-stable review Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 01/27] crypto: af_alg - properly label AF_ALG socket Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 02/27] ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 03/27] cfg80211: fix mic_failure tracing Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 04/27] rapidio/tsi721_dma: fix failure to obtain transaction descriptor Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 05/27] scsi: handle flush errors properly Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 06/27] mm, thp: do not allow thp faults to avoid cpuset restrictions Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 07/27] staging: vt6655: Fix disassociated messages every 10 seconds Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 08/27] iio: buffer: Fix demux table creation Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 09/27] printk: rename printk_sched to printk_deferred Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 10/27] timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 11/27] Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option" Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 12/27] x86-64, espfix: Dont leak bits 31:16 of %esp returning to 16-bit stack Greg Kroah-Hartman
2014-08-06 15:16 ` Luis Henriques
2014-08-06 15:24 ` Greg Kroah-Hartman
2014-08-06 15:55 ` Luis Henriques
2014-08-07 17:13 ` Greg Kroah-Hartman
2014-08-07 17:29 ` Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 13/27] x86, espfix: Move espfix definitions into a separate header file Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 14/27] x86, espfix: Fix broken header guard Greg Kroah-Hartman
2014-08-05 18:14 ` Greg Kroah-Hartman [this message]
2014-08-05 18:14 ` [PATCH 3.10 16/27] x86, espfix: Make it possible to disable 16-bit support Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 17/27] x86_64/entry/xen: Do not invoke espfix64 on Xen Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 18/27] staging: vt6655: Fix Warning on boot handle_irq_event_percpu Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 19/27] Revert "mac80211: move "bufferable MMPDU" check to fix AP mode scan" Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 20/27] net: mvneta: increase the 64-bit rx/tx stats out of the hot path Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 21/27] net: mvneta: use per_cpu stats to fix an SMP lock up Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 22/27] net: mvneta: do not schedule in mvneta_tx_timeout Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 23/27] net: mvneta: add missing bit descriptions for interrupt masks and causes Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 24/27] net: mvneta: replace Tx timer with a real interrupt Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 25/27] net/l2tp: dont fall back on UDP [get|set]sockopt Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 26/27] lib/btree.c: fix leak of whole btree nodes Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 27/27] x86/espfix/xen: Fix allocation of pages for paravirt page tables Greg Kroah-Hartman
2014-08-05 23:08 ` [PATCH 3.10 00/27] 3.10.52-stable review Shuah Khan
2014-08-06 2:34 ` Guenter Roeck
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