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yaml
---
r: 112524
b: refs/heads/master
c: 466ae83
h: refs/heads/master
v: v3
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Shaohua Li authored and Ingo Molnar committed Aug 15, 2008
1 parent ca5d5fe commit b0e1f0d
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Showing 4 changed files with 11 additions and 2 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 1ac2f7d55b7ee1613c90631e87fea22ec06781e5
refs/heads/master: 466ae837424dcc538b1af2a0eaf53be32edcdbe7
4 changes: 4 additions & 0 deletions trunk/drivers/char/agp/agp.h
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Expand Up @@ -30,6 +30,10 @@
#define _AGP_BACKEND_PRIV_H 1

#include <asm/agp.h> /* for flush_agp_cache() */
#ifndef map_page_into_agp_noflush
#define map_page_into_agp_noflush(page) map_page_into_agp(page)
#define map_page_into_agp_global_flush()
#endif

#define PFX "agpgart: "

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4 changes: 3 additions & 1 deletion trunk/drivers/char/agp/generic.c
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Expand Up @@ -274,6 +274,7 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge,
new->memory[i] = virt_to_gart(addr);
new->page_count++;
}
map_page_into_agp_global_flush();
new->bridge = bridge;

return new;
Expand Down Expand Up @@ -1186,7 +1187,8 @@ void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
if (page == NULL)
return NULL;

map_page_into_agp(page);
/* agp_allocate_memory will do flush */
map_page_into_agp_noflush(page);

get_page(page);
atomic_inc(&agp_bridge->current_memory_agp);
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3 changes: 3 additions & 0 deletions trunk/include/asm-x86/agp.h
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Expand Up @@ -15,6 +15,9 @@
#define map_page_into_agp(page) set_pages_uc(page, 1)
#define unmap_page_from_agp(page) set_pages_wb(page, 1)

#define map_page_into_agp_noflush(page) set_pages_uc_noflush(page, 1)
#define map_page_into_agp_global_flush() set_memory_flush_all()

/*
* Could use CLFLUSH here if the cpu supports it. But then it would
* need to be called for each cacheline of the whole page so it may
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