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[Qemu-devel] [PATCH] kvm: add detail error message when fail to add ioev
From: |
Amos Kong |
Subject: |
[Qemu-devel] [PATCH] kvm: add detail error message when fail to add ioeventfd |
Date: |
Wed, 22 May 2013 12:57:35 +0800 |
I try to hotplug 28 * 8 multiple-function devices to guest with
old host kernel, ioeventfds in host kernel will be exhausted, then
qemu fails to allocate ioeventfds for blk/nic devices.
It's better to add detail error here.
Signed-off-by: Amos Kong <address@hidden>
---
kvm-all.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 8222729..3d5f7b7 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -813,6 +813,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
data, true, section->size, match_data);
if (r < 0) {
+ fprintf(stderr, "%s: error adding ioeventfd: %s\n",
+ __func__, strerror(-r));
abort();
}
}
@@ -843,6 +845,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
data, true, section->size, match_data);
if (r < 0) {
+ fprintf(stderr, "%s: error adding ioeventfd: %s\n",
+ __func__, strerror(-r));
abort();
}
}
--
1.7.1
- [Qemu-devel] [PATCH] kvm: add detail error message when fail to add ioeventfd,
Amos Kong <=