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base: introduce caching attributes (fix #1184)

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On ARM it's relevant to not only distinguish between ordinary cached memory
and write-combined one, but also having non-cached memory too. To insert the
appropriated page table entries e.g.: in the base-hw kernel, we need to preserve
the information about the kind of memory from allocation until the pager
resolves a page fault. Therefore, this commit introduces a new Cache_attribute
type, and replaces the write_combined boolean with the new type where necessary.
This commit is contained in:
Stefan Kalkowski
2014-06-19 16:37:31 +02:00
committed by Norman Feske
parent 9580954d81
commit 786fe805da
60 changed files with 216 additions and 160 deletions
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2
repos/os/src/server/loader/ram_session_client_guard.h
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@ -34,7 +34,7 @@ namespace Genode {
Ram_session_client_guard(Ram_session_capability session, size_t amount)
: Ram_session_client(session), _amount(amount), _consumed(0) { }
Ram_dataspace_capability alloc(size_t size, bool cached)
Ram_dataspace_capability alloc(size_t size, Cache_attribute cached)
{
Lock::Guard _consumed_lock_guard(_consumed_lock);

2
repos/os/src/server/part_blk/component.h
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@ -271,7 +271,7 @@ class Block::Root :
}
Ram_dataspace_capability ds_cap;
ds_cap = Genode::env()->ram_session()->alloc(tx_buf_size, true);
ds_cap = Genode::env()->ram_session()->alloc(tx_buf_size);
return new (md_alloc())
Session_component(ds_cap,
Partition_table::table().partition(num),