Hi Magnus,
On Wed, Feb 20, 2019 at 3:55 PM Magnus Damm <magnus.damm@xxxxxxxxx> wrote:
> From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
>
> Add a memory bank location check to the whitelist handling.
>
> Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
Thanks for your patch!
> --- 0001/drivers/iommu/ipmmu-vmsa.c
> +++ work/drivers/iommu/ipmmu-vmsa.c 2019-02-20 22:59:28.589893396 +0900
> @@ -797,6 +798,12 @@ static bool ipmmu_slave_whitelist(struct
> if (!soc_device_match(soc_rcar_gen3_whitelist))
> return false;
>
> + /* In case all system memory fits within 32 bits of physical space
> + * then assume the IPMMU will not be needed for address expansion.
> + */
> + if (memblock_end_of_DRAM() <= SZ_4G)
Can this give a compiler warning on arm32 when CONFIG_ARM_LPAE=n?
> + return false;
> +
> /* Check whether this slave device can work with the IPMMU */
> for (i = 0; i < ARRAY_SIZE(rcar_gen3_slave_whitelist); i++) {
> if (!strcmp(dev_name(dev), rcar_gen3_slave_whitelist[i]))
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
