Previously, the AMD power monitor implementation did not enable the
timeout, causing the lcore to remain in a wait state until an external
monitoring event occurred or an interrupt was received.
This patch enables the timeout-based exit condition, allowing
the lcore to automatically wake up after the specified period.
The maximum supported timeout value is 2^32 - 1.
Fixes: c7ed1ce04704 ("eal/x86: add power intrinsics for AMD")
Cc: sta...@dpdk.org
Signed-off-by: Sivaprasad Tummala <sivaprasad.tumm...@amd.com>
v2:
1. fixed asm compilation error.
---
lib/eal/x86/rte_power_intrinsics.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/lib/eal/x86/rte_power_intrinsics.c
b/lib/eal/x86/rte_power_intrinsics.c
index 489ad3983f..8a5f222aea 100644
--- a/lib/eal/x86/rte_power_intrinsics.c
+++ b/lib/eal/x86/rte_power_intrinsics.c
@@ -89,14 +89,14 @@ static void amd_monitorx(volatile void *addr)
static void amd_mwaitx(const uint64_t timeout)
{
- RTE_SET_USED(timeout);
#if defined(RTE_TOOLCHAIN_MSVC) || defined(__MWAITX__)
- _mm_mwaitx(0, 0, 0);
+ _mm_mwaitx(2, 0, (uint32_t)timeout);
#else
asm volatile(".byte 0x0f, 0x01, 0xfb;"
: /* ignore rflags */
: "a"(0), /* enter C1 */
- "c"(0)); /* no time-out */
+ "b"((uint32_t)timeout),
+ "c"(2)); /* enable time-out */
#endif
}
--
2.43.0
