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From: Ian Campbell <ian.campbell@citrix.com>
To: xen-devel@lists.xen.org
Cc: julien.grall@citrix.com, tim@xen.org,
	Ian Campbell <ian.campbell@citrix.com>,
	stefano.stabellini@eu.citrix.com
Subject: [PATCH RFC 1/7] xen: arm: Load xen under 4GB on 32-bit
Date: Tue, 17 Sep 2013 02:40:44 +0100	[thread overview]
Message-ID: <1379382050-11821-1-git-send-email-ian.campbell@citrix.com> (raw)
In-Reply-To: <1379381846.11304.73.camel@hastur.hellion.org.uk>

We need to be able to use a 1:1 mapping during bring up.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
 xen/arch/arm/setup.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index 4b31623..d0220d9 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -258,6 +258,14 @@ static paddr_t __init get_xen_paddr(void)
             if ( !e )
                 continue;
 
+#ifdef CONFIG_ARM_32
+            /* Xen must be under 4GB */
+            if ( e > 0x100000000ULL )
+                e = 0x100000000ULL;
+            if ( e < bank->start )
+                continue;
+#endif
+
             s = e - min_size;
 
             if ( s > paddr )
-- 
1.8.3.2

  reply	other threads:[~2013-09-17  1:40 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-17  1:37 [PATCH RFC 0/N] xen: arm: rework early bring up Ian Campbell
2013-09-17  1:40 ` Ian Campbell [this message]
2013-09-18 15:44   ` [PATCH RFC 1/7] xen: arm: Load xen under 4GB on 32-bit Julien Grall
2013-09-19  9:21   ` Tim Deegan
2013-09-17  1:40 ` [PATCH RFC 2/7] xen: arm: Log the raw MIDR on boot Ian Campbell
2013-09-17 12:05   ` Julien Grall
2013-09-19  9:21   ` Tim Deegan
2013-09-17  1:40 ` [PATCH RFC 3/7] xen: arm: make sure we stay within the memory bank during mm setup Ian Campbell
2013-09-17 12:19   ` Julien Grall
2013-09-19  9:27     ` Tim Deegan
2013-09-17  1:40 ` [PATCH RFC 4/7] xen: arm: add two new device tree helpers Ian Campbell
2013-09-17 13:05   ` Julien Grall
2013-09-18 17:11   ` Julien Grall
2013-09-18 17:14     ` Ian Campbell
2013-09-17  1:40 ` [PATCH RFC 5/7] xen: arm: rewrite start of day page table and cpu bring up Ian Campbell
2013-09-17 16:18   ` Julien Grall
2013-09-17 16:36     ` Ian Campbell
2013-09-17 16:55       ` Julien Grall
2013-09-17 18:30         ` Andre Przywara
2013-09-17 19:19           ` Ian Campbell
2013-09-18 13:57   ` Julien Grall
2013-09-18 15:12     ` Ian Campbell
2013-09-18 17:06   ` Julien Grall
2013-09-18 17:14     ` Ian Campbell
2013-09-19 11:36   ` Tim Deegan
2013-09-20 17:09     ` Ian Campbell
2013-09-20 17:16     ` Ian Campbell
2013-09-19 13:36   ` Tim Deegan
2013-09-17  1:40 ` [PATCH RFC 6/7] xen: arm: configure TCR_EL2 for 40 bit physical address space Ian Campbell
2013-09-18 15:50   ` Julien Grall
2013-09-19 13:42   ` Tim Deegan
2013-09-17  1:40 ` [PATCH RFC 7/7] xen: arm: split cpu0's domheap mapping PTs out from xen_second Ian Campbell
2013-09-19 13:47   ` Tim Deegan
2013-09-17 11:34 ` [PATCH RFC 0/N] xen: arm: rework early bring up Julien Grall
2013-09-17 12:43   ` Ian Campbell
2013-09-18 13:40     ` Julien Grall
2013-09-18 17:33 ` Julien Grall
2013-09-18 19:22   ` Ian Campbell
2013-09-18 19:24     ` Ian Campbell
2013-09-18 20:00       ` Julien Grall
2013-09-18 20:22         ` Ian Campbell
2013-09-18 21:14           ` Julien Grall
2013-09-18 21:28             ` Ian Campbell
2013-09-19 14:49               ` Julien Grall
2013-09-19 15:51                 ` Ian Campbell

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