[PATCH] Fix corruption in hcall9
From: Anton Blanchard <hidden>
Date: 2007-01-08 15:37:16
It looks to me like we are corrupting r12 in the hcall9 function. Although we have r0 free we cant use offsets against it, so save away r12 in there instead. Signed-off-by: Anton Blanchard <redacted> --- diff -ru linux-2.6.20-rc3-orig/arch/powerpc/platforms/pseries/hvCall.S linux-2.6.20-rc3/arch/powerpc/platforms/pseries/hvCall.S
--- linux-2.6.20-rc3-orig/arch/powerpc/platforms/pseries/hvCall.S 2006-11-29 15:57:37.000000000 -0600
+++ linux-2.6.20-rc3/arch/powerpc/platforms/pseries/hvCall.S 2007-01-08 07:34:45.000000000 -0600@@ -145,6 +145,7 @@ HVSC /* invoke the hypervisor */ + mr r0,r12 ld r12,STK_PARM(r4)(r1) std r4, 0(r12) std r5, 8(r12)
@@ -154,7 +155,7 @@ std r9, 40(r12) std r10,48(r12) std r11,56(r12) - std r12,64(r12) + std r0, 64(r12) HCALL_INST_POSTCALL