On 7/7/2011 8:50 AM, Lorenzo Pieralisi wrote:
This patch adds the code required to allocate and populate page tables
that are needed by save/restore code to deal with MMU off/on
transactions.
MMU is enabled early in the resume path which allows to call into
Linux subsystems with init_mm virtual mappings (cloned at boot).
Current thread page table pointer and context id is saved on power
down from active_mm and restored on warm boot.
Currently the translation tables contains 1:1 mappings of the Linux
kernel code and data, and 1:1 UNCACHED mapping of control code required when MMU
is turned off in the restore code path.
Signed-off-by: Lorenzo Pieralisi<lorenzo.pieral...@arm.com>
---
arch/arm/kernel/sr_mapping.c | 78 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 78 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/kernel/sr_mapping.c
diff --git a/arch/arm/kernel/sr_mapping.c b/arch/arm/kernel/sr_mapping.c
new file mode 100644
index 0000000..32640dc
--- /dev/null
+++ b/arch/arm/kernel/sr_mapping.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2008-2011 ARM Limited
This is more of question so don't beat me if I am wrong here.
Above file doesn't exist in k.org from 2008 right ?
I noticed this in your other patches too.
Regards
santosh
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