[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 28/31] kvm: Flush coalesced mmio buffer on IO window
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [PATCH 28/31] kvm: Flush coalesced mmio buffer on IO window exits |
Date: |
Mon, 24 Jan 2011 07:02:37 -0200 |
From: Jan Kiszka <address@hidden>
We must flush pending mmio writes if we leave kvm_cpu_exec for an IO
window. Otherwise we risk to loose those requests when migrating to a
different host during that window.
Signed-off-by: Jan Kiszka <address@hidden>
Signed-off-by: Marcelo Tosatti <address@hidden>
---
kvm-all.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 3a1f63b..9976762 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -918,6 +918,8 @@ int kvm_cpu_exec(CPUState *env)
cpu_single_env = env;
kvm_arch_post_run(env, run);
+ kvm_flush_coalesced_mmio_buffer();
+
if (ret == -EINTR || ret == -EAGAIN) {
cpu_exit(env);
DPRINTF("io window exit\n");
@@ -930,8 +932,6 @@ int kvm_cpu_exec(CPUState *env)
abort();
}
- kvm_flush_coalesced_mmio_buffer();
-
ret = 0; /* exit loop */
switch (run->exit_reason) {
case KVM_EXIT_IO:
--
1.7.2.3
- [Qemu-devel] [PATCH 19/31] kvm: x86: Prepare kvm_get_mp_state for in-kernel irqchip, (continued)
- [Qemu-devel] [PATCH 19/31] kvm: x86: Prepare kvm_get_mp_state for in-kernel irqchip, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 22/31] kvm: x86: Refactor msr_star/hsave_pa setup and checks, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 24/31] kvm: x86: Fix !CONFIG_KVM_PARA build, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 11/31] kvm: x86: Prevent sign extension of DR7 in guest debugging mode, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 30/31] kvm: x86: Implicitly clear nmi_injected/pending on reset, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 31/31] kvm: x86: Only read/write MSR_KVM_ASYNC_PF_EN if supported, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 03/31] Clean up cpu_inject_x86_mce(), Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 15/31] kvm: Stop on all fatal exit reasons, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 17/31] x86: Optionally dump code bytes on cpu_dump_state, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 02/31] kvm: convert kvm_ioctl(KVM_CHECK_EXTENSION) to kvm_check_extension(), Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 28/31] kvm: Flush coalesced mmio buffer on IO window exits,
Marcelo Tosatti <=
- [Qemu-devel] [PATCH 05/31] Add function for checking mca broadcast of CPU, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 04/31] Add "broadcast" option for mce command, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 01/31] kvm: Enable user space NMI injection for kvm guest, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 07/31] kvm: kvm_mce_inj_* subroutines for templated error injections, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 13/31] kvm: Fix coding style violations, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 08/31] kvm: introduce kvm_inject_x86_mce_on, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 14/31] kvm: x86: Swallow KVM_EXIT_SET_TPR, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 09/31] kvm: x86: Fix DPL write back of segment registers, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 29/31] kvm: Do not use qemu_fair_mutex, Marcelo Tosatti, 2011/01/24
- [Qemu-devel] [PATCH 18/31] kvm: x86: Align kvm_arch_put_registers code with comment, Marcelo Tosatti, 2011/01/24