On 03/07/2012 07:56 AM, Alexander Graf wrote: > On 03/01/2012 02:20 AM, Olivia Yin wrote: >> From: Liu Yu<yu.liu@xxxxxxxxxxxxx> >> >> So that we can call it when improving SPE switch like book3e did for >> fp switch. > > Timur / Scott, can you please (n)ack this one? ACK, though as it touches non-KVM code it'd be nice to get an ack from Kumar. -Scott > > Alex > >> Signed-off-by: Liu Yu<yu.liu@xxxxxxxxxxxxx> >> Signed-off-by: Olivia Yin<hong-hua.yin@xxxxxxxxxxxxx> >> --- >> v2: add Signed-off-by >> >> arch/powerpc/kernel/head_fsl_booke.S | 23 ++++++----------------- >> 1 files changed, 6 insertions(+), 17 deletions(-) >> >> diff --git a/arch/powerpc/kernel/head_fsl_booke.S >> b/arch/powerpc/kernel/head_fsl_booke.S >> index d5d78c4..c96e025 100644 >> --- a/arch/powerpc/kernel/head_fsl_booke.S >> +++ b/arch/powerpc/kernel/head_fsl_booke.S >> @@ -539,8 +539,10 @@ interrupt_base: >> /* SPE Unavailable */ >> START_EXCEPTION(SPEUnavailable) >> NORMAL_EXCEPTION_PROLOG >> - bne load_up_spe >> - addi r3,r1,STACK_FRAME_OVERHEAD >> + beq 1f >> + bl load_up_spe >> + b fast_exception_return >> +1: addi r3,r1,STACK_FRAME_OVERHEAD >> EXC_XFER_EE_LITE(0x2010, KernelSPE) >> #else >> EXCEPTION(0x2020, SPEUnavailable, unknown_exception, EXC_XFER_EE) >> @@ -743,7 +745,7 @@ tlb_write_entry: >> /* Note that the SPE support is closely modeled after the AltiVec >> * support. Changes to one are likely to be applicable to the >> * other! */ >> -load_up_spe: >> +_GLOBAL(load_up_spe) >> /* >> * Disable SPE for the task which had SPE previously, >> * and save its SPE registers in its thread_struct. >> @@ -791,20 +793,7 @@ load_up_spe: >> subi r4,r5,THREAD >> stw r4,last_task_used_spe@l(r3) >> #endif /* !CONFIG_SMP */ >> - /* restore registers and return */ >> -2: REST_4GPRS(3, r11) >> - lwz r10,_CCR(r11) >> - REST_GPR(1, r11) >> - mtcr r10 >> - lwz r10,_LINK(r11) >> - mtlr r10 >> - REST_GPR(10, r11) >> - mtspr SPRN_SRR1,r9 >> - mtspr SPRN_SRR0,r12 >> - REST_GPR(9, r11) >> - REST_GPR(12, r11) >> - lwz r11,GPR11(r11) >> - rfi >> + blr >> >> /* >> * SPE unavailable trap from kernel - print a message, but let > > -- > To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
