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llvmpipe: Cap to 2 GB on 32 bits

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On 32 bits system, application memory is quite limited.
llvmpipe uses application memory. To help prevent memory
exhaustion, limit reported memory availability to 2GB.

Some gallium nine apps do check reported memory by allocating
resources until memory is full. Gallium nine refuses allocations
when 80% of the reported memory limit is used. This change
helps some apps to start.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Axel Davy 2016-03-28 22:34:35 +02:00
parent 218459771a
commit 814ca96d0d
1 changed files with 6 additions and 0 deletions
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6
src/gallium/drivers/llvmpipe/lp_screen.c
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@ -280,6 +280,12 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
if (!os_get_total_physical_memory(&system_memory))
return 0;
if (sizeof(void *) == 4)
/* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
* eat application memory, which is quite limited on 32 bits. App
* shouldn't expect too much available memory. */
system_memory = MIN2(system_memory, 2048 << 20);
return (int)(system_memory >> 20);
}
case PIPE_CAP_UMA: