[PATCH v2] powerpc/8xx: Fix STRICT_KERNEL_RWX startup test failure

[Michael Ellerman]

On Mon, 2020-04-20 at 05:37:42 UTC, Christophe Leroy wrote:
> WRITE_RO lkdtm test works.
> 
> But when selecting CONFIG_DEBUG_RODATA_TEST, the kernel reports
> 	rodata_test: test data was not read only
> 
> This is because when rodata test runs, there are still old entries
> in TLB.
> 
> Flush TLB after setting kernel pages RO or NX.
> 
> Fixes: d5f17ee96447 ("powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX")
> Cc: stable at vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/b61c38baa98056d4802ff5be5cfb979efc2d0f7a

cheers