diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2008-01-30 13:34:07 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:34:07 +0100 |
| commit | d7c8f21a8cad0228c7c5ce2bb6dbd95d1ee49d13 (patch) | |
| tree | d1e305bec62022a0bec82a3499a372c2c7c40583 /drivers/char/agp | |
| parent | x86: make various pageattr.c functions static (diff) | |
| download | linux-dev-d7c8f21a8cad0228c7c5ce2bb6dbd95d1ee49d13.tar.xz linux-dev-d7c8f21a8cad0228c7c5ce2bb6dbd95d1ee49d13.zip | |
x86: cpa: move flush to cpa
The set_memory_* and set_pages_* family of API's currently requires the
callers to do a global tlb flush after the function call; forgetting this is
a very nasty deathtrap. This patch moves the global tlb flush into
each of the callers
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/char/agp')
| -rw-r--r-- | drivers/char/agp/ali-agp.c | 2 | ||||
| -rw-r--r-- | drivers/char/agp/i460-agp.c | 2 | ||||
| -rw-r--r-- | drivers/char/agp/intel-agp.c | 5 |
3 files changed, 0 insertions, 9 deletions
diff --git a/drivers/char/agp/ali-agp.c b/drivers/char/agp/ali-agp.c index aa5ddb716ffb..1ffb381130c3 100644 --- a/drivers/char/agp/ali-agp.c +++ b/drivers/char/agp/ali-agp.c @@ -145,7 +145,6 @@ static void *m1541_alloc_page(struct agp_bridge_data *bridge) void *addr = agp_generic_alloc_page(agp_bridge); u32 temp; - global_flush_tlb(); if (!addr) return NULL; @@ -162,7 +161,6 @@ static void ali_destroy_page(void * addr, int flags) if (flags & AGP_PAGE_DESTROY_UNMAP) { global_cache_flush(); /* is this really needed? --hch */ agp_generic_destroy_page(addr, flags); - global_flush_tlb(); } else agp_generic_destroy_page(addr, flags); } diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c index e72a83e2bad5..76f581c85a7d 100644 --- a/drivers/char/agp/i460-agp.c +++ b/drivers/char/agp/i460-agp.c @@ -527,7 +527,6 @@ static void *i460_alloc_page (struct agp_bridge_data *bridge) if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) { page = agp_generic_alloc_page(agp_bridge); - global_flush_tlb(); } else /* Returning NULL would cause problems */ /* AK: really dubious code. */ @@ -539,7 +538,6 @@ static void i460_destroy_page (void *page, int flags) { if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) { agp_generic_destroy_page(page, flags); - global_flush_tlb(); } } diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index c03a7143928f..189efb6ef970 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -212,11 +212,9 @@ static void *i8xx_alloc_pages(void) if (set_pages_uc(page, 4) < 0) { set_pages_wb(page, 4); - global_flush_tlb(); __free_pages(page, 2); return NULL; } - global_flush_tlb(); get_page(page); atomic_inc(&agp_bridge->current_memory_agp); return page_address(page); @@ -231,7 +229,6 @@ static void i8xx_destroy_pages(void *addr) page = virt_to_page(addr); set_pages_wb(page, 4); - global_flush_tlb(); put_page(page); __free_pages(page, 2); atomic_dec(&agp_bridge->current_memory_agp); @@ -341,7 +338,6 @@ static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type) switch (pg_count) { case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge); - global_flush_tlb(); break; case 4: /* kludge to get 4 physical pages for ARGB cursor */ @@ -404,7 +400,6 @@ static void intel_i810_free_by_type(struct agp_memory *curr) else { agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[0]), AGP_PAGE_DESTROY_UNMAP); - global_flush_tlb(); agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[0]), AGP_PAGE_DESTROY_FREE); } |