Re: [kvm-unit-tests PATCH v3 07/14] arm/arm64: gicv3: Enable/Disable LPIs at re-distributor level

[Andrew Jones <drjones@redhat.com>]

On Tue, Jan 28, 2020 at 11:34:52AM +0100, Eric Auger wrote:
> This helper function controls the signaling of LPIs at
> redistributor level.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> 
> ---
> 
> v2 -> v3:
> - move the helper in lib/arm/gic-v3.c
> - rename the function with gicv3_lpi_ prefix
> - s/report_abort/assert
> ---
>  lib/arm/asm/gic-v3.h |  1 +
>  lib/arm/gic-v3.c     | 17 +++++++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/lib/arm/asm/gic-v3.h b/lib/arm/asm/gic-v3.h
> index ec2a6f0..734c0c0 100644
> --- a/lib/arm/asm/gic-v3.h
> +++ b/lib/arm/asm/gic-v3.h
> @@ -96,6 +96,7 @@ extern void gicv3_lpi_set_config(int n, u8 val);
>  extern u8 gicv3_lpi_get_config(int n);
>  extern void gicv3_lpi_set_pending_table_bit(int rdist, int n, bool set);
>  extern void gicv3_lpi_alloc_tables(void);
> +extern void gicv3_lpi_rdist_ctrl(u32 redist, bool set);
>  
>  static inline void gicv3_do_wait_for_rwp(void *base)
>  {
> diff --git a/lib/arm/gic-v3.c b/lib/arm/gic-v3.c
> index c33f883..7865d01 100644
> --- a/lib/arm/gic-v3.c
> +++ b/lib/arm/gic-v3.c
> @@ -210,4 +210,21 @@ void gicv3_lpi_set_pending_table_bit(int rdist, int n, bool set)
>  		byte &= ~mask;
>  	*ptr = byte;
>  }
> +
> +void gicv3_lpi_rdist_ctrl(u32 redist, bool set)

_set_clr_ ?

> +{
> +	void *ptr;
> +	u64 val;
> +
> +	assert(redist < nr_cpus);
> +
> +	ptr = gicv3_data.redist_base[redist];
> +	val = readl(ptr + GICR_CTLR);
> +	if (set)
> +		val |= GICR_CTLR_ENABLE_LPIS;
> +	else
> +		val &= ~GICR_CTLR_ENABLE_LPIS;
> +	writel(val,  ptr + GICR_CTLR);
> +}
>  #endif /* __aarch64__ */
> +

stray blank line here

> -- 
> 2.20.1
>

I'm not sure why this needs its own patch. I could just be part of the
next patch.

Thanks,
drew

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