X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fmips%2Finclude%2Fasm%2Fstackframe.h;h=db0fa7b5aeaf3f849d0a197f63c7a1ba8a487498;hb=21ce3cd63365b0d07794adeb4325944bfa86fb4e;hp=4c37c4e5f72e4e51b578148f2e8943554da1b41a;hpb=6572a281cfd805dd54718597d6c33261b5be052b;p=pandora-kernel.git

diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index 4c37c4e5f72e..db0fa7b5aeaf 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -194,6 +194,19 @@
 		LONG_S	$31, PT_R31(sp)
 		ori	$28, sp, _THREAD_MASK
 		xori	$28, _THREAD_MASK
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+		.set    mips64
+		pref    0, 0($28)       /* Prefetch the current pointer */
+		pref    0, PT_R31(sp)   /* Prefetch the $31(ra) */
+		/* The Octeon multiplier state is affected by general multiply
+		    instructions. It must be saved before and kernel code might
+		    corrupt it */
+		jal     octeon_mult_save
+		LONG_L  v1, 0($28)  /* Load the current pointer */
+			 /* Restore $31(ra) that was changed by the jal */
+		LONG_L  ra, PT_R31(sp)
+		pref    0, 0(v1)    /* Prefetch the current thread */
+#endif
 		.set	pop
 		.endm
 
@@ -324,6 +337,10 @@
 		DVPE	5				# dvpe a1
 		jal	mips_ihb
 #endif /* CONFIG_MIPS_MT_SMTC */
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+		/* Restore the Octeon multiplier state */
+		jal	octeon_mult_restore
+#endif
 		mfc0	a0, CP0_STATUS
 		ori	a0, STATMASK
 		xori	a0, STATMASK