diff mbox

[v2,2/3] Revert "xen/arm: Map mmio-sram nodes as un-cached memory"

Message ID 1485436562-7312-3-git-send-email-edgar.iglesias@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Edgar E. Iglesias Jan. 26, 2017, 1:16 p.m. UTC
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.
---
 xen/arch/arm/domain_build.c | 30 ------------------------------
 1 file changed, 30 deletions(-)

Comments

Julien Grall Jan. 31, 2017, 4:35 p.m. UTC | #1
Hi Edgar,

On 26/01/17 13:16, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
>
> This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.

I would add a word explain why it is reverted. Something like: "The 
default attribute mapping for MMIO as been relaxed and now rely on the 
hardware domain to set the correct memory attribute".

Also, your signed-off is missing.

Cheers,
Edgar E. Iglesias Jan. 31, 2017, 7:15 p.m. UTC | #2
On Tue, Jan 31, 2017 at 04:35:09PM +0000, Julien Grall wrote:
> Hi Edgar,
> 
> On 26/01/17 13:16, Edgar E. Iglesias wrote:
> >From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
> >
> >This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.
> 
> I would add a word explain why it is reverted. Something like: "The default
> attribute mapping for MMIO as been relaxed and now rely on the hardware
> domain to set the correct memory attribute".
> 
> Also, your signed-off is missing.

Thanks Julien,

I've fixed this and will send out a v3 shortly.

Best regards,
Edgar


> 
> Cheers,
> 
> -- 
> Julien Grall
Stefano Stabellini Jan. 31, 2017, 10:18 p.m. UTC | #3
On Tue, 31 Jan 2017, Julien Grall wrote:
> Hi Edgar,
> 
> On 26/01/17 13:16, Edgar E. Iglesias wrote:
> > From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
> > 
> > This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.
> 
> I would add a word explain why it is reverted. Something like: "The default
> attribute mapping for MMIO as been relaxed and now rely on the hardware domain
> to set the correct memory attribute".
> 
> Also, your signed-off is missing.

Assuming Edgar is OK with this, I fixed it up and committed. Edgar,
please let me know if it's a problem.
Edgar E. Iglesias Jan. 31, 2017, 10:20 p.m. UTC | #4
On Tue, Jan 31, 2017 at 02:18:40PM -0800, Stefano Stabellini wrote:
> On Tue, 31 Jan 2017, Julien Grall wrote:
> > Hi Edgar,
> > 
> > On 26/01/17 13:16, Edgar E. Iglesias wrote:
> > > From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
> > > 
> > > This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.
> > 
> > I would add a word explain why it is reverted. Something like: "The default
> > attribute mapping for MMIO as been relaxed and now rely on the hardware domain
> > to set the correct memory attribute".
> > 
> > Also, your signed-off is missing.
> 
> Assuming Edgar is OK with this, I fixed it up and committed. Edgar,
> please let me know if it's a problem.

Ah, thanks!

Our emails crossed paths as I submitted v3 :-)

Feel free to keep the commited version and ignore v3.

Best regards,
Edgar
diff mbox

Patch

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 4fc467c..c97a1f5 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -48,20 +48,6 @@  struct map_range_data
     p2m_type_t p2mt;
 };
 
-static const struct dt_device_match dev_map_attrs[] __initconst =
-{
-    {
-        __DT_MATCH_COMPATIBLE("mmio-sram"),
-        __DT_MATCH_PROP("no-memory-wc"),
-        .data = (void *) (uintptr_t) p2m_mmio_direct_dev,
-    },
-    {
-        __DT_MATCH_COMPATIBLE("mmio-sram"),
-        .data = (void *) (uintptr_t) p2m_mmio_direct_nc,
-    },
-    { /* sentinel */ },
-};
-
 //#define DEBUG_11_ALLOCATION
 #ifdef DEBUG_11_ALLOCATION
 # define D11PRINT(fmt, args...) printk(XENLOG_DEBUG fmt, ##args)
@@ -1170,21 +1156,6 @@  static int handle_device(struct domain *d, struct dt_device_node *dev,
     return 0;
 }
 
-static p2m_type_t lookup_map_attr(struct dt_device_node *node,
-                                  p2m_type_t parent_p2mt)
-{
-    const struct dt_device_match *r;
-
-    /* Search and if nothing matches, use the parent's attributes.  */
-    r = dt_match_node(dev_map_attrs, node);
-
-    /*
-     * If this node does not dictate specific mapping attributes,
-     * it inherits its parent's attributes.
-     */
-    return r ? (uintptr_t) r->data : parent_p2mt;
-}
-
 static int handle_node(struct domain *d, struct kernel_info *kinfo,
                        struct dt_device_node *node,
                        p2m_type_t p2mt)
@@ -1275,7 +1246,6 @@  static int handle_node(struct domain *d, struct kernel_info *kinfo,
                "WARNING: Path %s is reserved, skip the node as we may re-use the path.\n",
                path);
 
-    p2mt = lookup_map_attr(node, p2mt);
     res = handle_device(d, node, p2mt);
     if ( res)
         return res;