From: Anton Blanchard Date: Mon, 8 Jan 2007 15:37:16 +0000 (+1100) Subject: [POWERPC] Fix corruption in hcall9 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ab87e8dc88a7cae341c403547cea6b022f5ac023;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [POWERPC] Fix corruption in hcall9 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. r12 holds the ninth return value from the hypervisor call, so without this fix, the caller will see the wrong value for the ninth element in the array that gets the return values. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index c00cfed7af2c..527da445aaa5 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -145,6 +145,7 @@ _GLOBAL(plpar_hcall9) 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 @@ _GLOBAL(plpar_hcall9) std r9, 40(r12) std r10,48(r12) std r11,56(r12) - std r12,64(r12) + std r0, 64(r12) HCALL_INST_POSTCALL