diff options
| author | Gaurav Kohli <gkohli@codeaurora.org> | 2016-09-02 18:03:22 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-12-27 02:49:00 -0800 |
| commit | b1713f5e9a8817dbabe5cfc7ef3f937837bd374a (patch) | |
| tree | 170eb84b932ca21d9ddd3daf6060d196d311f334 /drivers/soc | |
| parent | 1075dc72d7692adfd185d07d143017b49e2a099e (diff) | |
soc: qcom: flush persistent kmaps and fixmap mappings for subsystem mdt
On 32 bit architecture xpu violations are happening because of mappings
in PK map regions. Flush the PKMAP and fixmap mappings to make sure that
there are no duplicate mappings for any pil mdt region. On 64 bit
architecture these functions are empty.
Change-Id: Ie69fcf9044a89328e91ff8969044835f2a487a10
Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/subsys-pil-tz.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/soc/qcom/subsys-pil-tz.c b/drivers/soc/qcom/subsys-pil-tz.c index b8d096a9c057..769a683e3d8d 100644 --- a/drivers/soc/qcom/subsys-pil-tz.c +++ b/drivers/soc/qcom/subsys-pil-tz.c @@ -25,6 +25,7 @@ #include <linux/msm-bus-board.h> #include <linux/msm-bus.h> #include <linux/dma-mapping.h> +#include <linux/highmem.h> #include <soc/qcom/subsystem_restart.h> #include <soc/qcom/ramdump.h> @@ -613,6 +614,10 @@ static int pil_init_image_trusted(struct pil_desc *pil, return -ENOMEM; } + /* Make sure there are no mappings in PKMAP and fixmap */ + kmap_flush_unused(); + kmap_atomic_flush_unused(); + memcpy(mdata_buf, metadata, size); request.proc = d->pas_id; |