On Wed, Mar 02, 2022 at 04:36:52PM +0530, Anshuman Khandual wrote:
On 3/2/22 3:35 PM, Geert Uytterhoeven wrote:
I doubt the switch() variant would give better code on any platform.
What about using tables everywhere, using designated initializers
to improve readability?
Designated initializers ? Could you please be more specific. A table look
up on arm platform would be something like this and arm_protection_map[]
needs to be updated with user_pgprot like before.
There is *absolutely* nothing wrong with that. Updating it once during
boot is way more efficient than having to compute the value each time
vm_get_page_prot() gets called.
Thanks.
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