[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH v1 7/8] xen/arm: vgic: Introduce helpers to read/write/clear/set vGIC register ...



On Fri, 2015-09-25 at 15:51 +0100, Julien Grall wrote:
> and use them in the vGIC emulation.
> 
> The GIC registers may support different access sizes. Rather than open
> coding the access for every registers, provide a set of helpers to access
> them.
> 
> The caller will have to call vgic_regN_* where N is the size of the
> emulated registers.

These helpers end up as e.g. vgic_regN_read/write, but they don't really
read or write anything, they just extract the required bits into a register
or update the bits into a variable.

Can we think of a better name? encode/decode?

This might be more apparent (maybe without the need to rename) if the
helpers took info->dabt.size instead of info.

> [...]
> +static inline void vgic_reg_clearbit(unsigned long *reg, register_t bits,

Please call these ones clearbits/setbits to avoid giving the impression
that they take a bit offset and just set/clear that one.

Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.