This is a note to let you know that I've just added the patch titled
MIPS: Export FP functions used by lose_fpu(1) for KVM
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-export-fp-functions-used-by-lose_fpu-1-for-kvm.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3ce465e04bfd8de9956d515d6e9587faac3375dc 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
From: James Hogan <james.hogan@xxxxxxxxxx>
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: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/kernel/mips_ksyms.c | 6 ++++++
1 file changed, 6 insertions(+)
--- 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(c
extern long __strnlen_user_asm(const char *s);
/*
+ * Core architecture code
+ */
+EXPORT_SYMBOL_GPL(_save_fp);
+
+/*
* String functions
*/
EXPORT_SYMBOL(memset);
Patches currently in stable-queue which might be from james.hogan@xxxxxxxxxx are
queue-3.10/kvm-mips-don-t-leak-fpu-dsp-to-guest.patch
queue-3.10/mips-export-fp-functions-used-by-lose_fpu-1-for-kvm.patch
queue-3.10/metag-fix-kstk_eip-and-kstk_esp-macros.patch
queue-3.10/mips-kvm-deliver-guest-interrupts-after-local_irq_disable.patch
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