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Message-Id: <1410818997-9432-43-git-send-email-kamal@canonical.com> Date: Mon, 15 Sep 2014 15:07:32 -0700 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: "H. Peter Anvin" <hpa@...or.com>, Richard Weinberger <richard@....at>, Luis Henriques <luis.henriques@...onical.com>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 3.13 042/187] x86, espfix: Make espfix64 a Kconfig option, fix UML 3.13.11.7 -stable review patch. If anyone has any objections, please let me know. ------------------ From: "H. Peter Anvin" <hpa@...or.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@...nel.org> Signed-off-by: H. Peter Anvin <hpa@...or.com> Cc: Richard Weinberger <richard@....at> Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com [ luis: backported to 3.11: adjusted context ] Signed-off-by: Luis Henriques <luis.henriques@...onical.com> Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- 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(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9562fc3..ea1c3af 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -983,6 +983,10 @@ 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 diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 92450ee..eb1d03b 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -29,7 +29,7 @@ obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o obj-y += syscall_$(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 diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index b5c176a..a965665 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -245,7 +245,7 @@ static void notrace start_secondary(void *unused) /* * Enable the espfix hack for this CPU */ -#ifdef CONFIG_X86_64 +#ifdef CONFIG_X86_ESPFIX64 init_espfix_ap(); #endif diff --git a/init/main.c b/init/main.c index da5d829..aca4f33 100644 --- a/init/main.c +++ b/init/main.c @@ -619,7 +619,7 @@ 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 -- 1.9.1 -- 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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