Hi Kamal, On Tue, Mar 31, 2015 at 11:46:43AM -0700, Kamal Mostafa wrote: > This is a note to let you know that I have just added a patch titled > > MIPS: Export FP functions used by lose_fpu(1) for KVM > > to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree > which can be found at: > > http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue > > This patch is scheduled to be released in version 3.13.11-ckt18. > > If you, or anyone else, feels it should not be added to this tree, please > reply to this email. > > For more information about the 3.13.y-ckt tree, see > https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable > > Thanks. > -Kamal > > ------ > > From 7adee277d64254de602234e7e53691d729f5e50c Mon Sep 17 00:00:00 2001 > From: James Hogan <james.hogan@xxxxxxxxxx> > Date: Tue, 10 Feb 2015 10:02:59 +0000 > Subject: MIPS: Export FP functions used by lose_fpu(1) for KVM > > commit 3ce465e04bfd8de9956d515d6e9587faac3375dc upstream. > > Export the _save_fp asm function used by the lose_fpu(1) macro to GPL > modules so that KVM can make use of it when it is built as a module. > > This fixes the following build error when CONFIG_KVM=m due to commit > f798217dfd03 ("KVM: MIPS: Don't leak FPU/DSP to guest"): > > ERROR: "_save_fp" [arch/mips/kvm/kvm.ko] undefined! > > Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx> > Fixes: f798217dfd03 (KVM: MIPS: Don't leak FPU/DSP to guest) > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > Cc: Paul Burton <paul.burton@xxxxxxxxxx> > Cc: Gleb Natapov <gleb@xxxxxxxxxx> > Cc: kvm@xxxxxxxxxxxxxxx > Cc: linux-mips@xxxxxxxxxxxxxx > Patchwork: https://patchwork.linux-mips.org/patch/9260/ > Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> > --- > arch/mips/kernel/mips_ksyms.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c > index 6e58e97..60adf79 100644 > --- a/arch/mips/kernel/mips_ksyms.c > +++ b/arch/mips/kernel/mips_ksyms.c > @@ -14,6 +14,7 @@ > #include <linux/mm.h> > #include <asm/uaccess.h> > #include <asm/ftrace.h> > +#include <asm/fpu.h> > > extern void *__bzero(void *__s, size_t __count); > extern long __strncpy_from_user_nocheck_asm(char *__to, > @@ -26,6 +27,11 @@ extern long __strnlen_user_nocheck_asm(const char *s); > extern long __strnlen_user_asm(const char *s); > > /* > + * Core architecture code > + */ > +EXPORT_SYMBOL_GPL(_save_fp); Before v3.16 this will cause a build error with cavium_octeon_defconfig. I submitted an updated stable patch for v3.10, v3.12, and v3.14, which should be suitable for v3.13 too. See: https://marc.info/?l=linux-mips&m=142557178417268&w=2 Cheers James > + > +/* > * String functions > */ > EXPORT_SYMBOL(memset); > -- > 1.9.1 >
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