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eal/linux: disable iopl operation for IBM Power

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iopl() call is mostly for the i386 architecture. In Power and other
architecture, it doesn't exist. This patch modified rte_eal_iopl_init()
and make it return -1 for Power and other architecture. Thus
rte_config.flags will not contain EAL_FLG_HIGH_IOPL flag for other
architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
Acked-by: David Marchand <david.marchand@6wind.com>
This commit is contained in:
Chao Zhu 2014-11-25 17:17:12 -05:00 committed by Thomas Monjalon
parent 9ae1553856
commit f0fa947c61
1 changed files with 8 additions and 0 deletions
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8
lib/librte_eal/linuxapp/eal/eal.c
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@ -50,7 +50,9 @@
#include <errno.h> #include <errno.h>
#include <sys/mman.h> #include <sys/mman.h>
#include <sys/queue.h> #include <sys/queue.h>
#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
#include <sys/io.h> #include <sys/io.h>
#endif
#include <rte_common.h> #include <rte_common.h>
#include <rte_debug.h> #include <rte_debug.h>
@ -673,13 +675,19 @@ rte_eal_mcfg_complete(void)
/* /*
* Request iopl privilege for all RPL, returns 0 on success * Request iopl privilege for all RPL, returns 0 on success
* iopl() call is mostly for the i386 architecture. For other architectures,
* return -1 to indicate IO privilege can't be changed in this way.
*/ */
int int
rte_eal_iopl_init(void) rte_eal_iopl_init(void)
{ {
#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
if (iopl(3) != 0) if (iopl(3) != 0)
return -1; return -1;
return 0; return 0;
#else
return -1;
#endif
} }
/* Launch threads, called at application init(). */ /* Launch threads, called at application init(). */