FYI
From: Ji, Ruili
Sent: 2022年9月6日 15:40
To: qemu-devel@xxxxxxxxxx
Cc: Liu, Aaron <Aaron.Liu@xxxxxxx>
Subject: [PATCH] hw/xen: set pci Atomic Ops requests for passthrough device
From c54e0714a1e1cac7dc416bd843b9ec7162bcfc47 Mon Sep 17 00:00:00 2001
From: Ruili Ji ruili.ji@xxxxxxx
Date: Tue, 6 Sep 2022 14:09:41 +0800
Subject: [PATCH] hw/xen: set pci Atomic Ops requests for passthrough device
Make guest os access pci device control 2 reg for passthrough device
as struct XenPTRegInfo described in the file hw/xen/xen_pt.h.
/* reg read only field mask (ON:RO/ROS, OFF:other) */
uint32_t ro_mask;
/* reg emulate field mask (ON:emu, OFF:passthrough) */
uint32_t emu_mask;
Resolves:
https://gitlab.com/qemu-project/qemu/-/issues/1196
Signed-off-by: Aaron.Liu@xxxxxxx
Signed-off-by: ruili.ji@xxxxxxx
---
hw/xen/xen_pt_config_init.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index c5c4e943a8..adc565a00a 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -985,8 +985,8 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = {
.offset = 0x28,
.size = 2,
.init_val = 0x0000,
- .ro_mask = 0xFFE0,
- .emu_mask = 0xFFFF,
+ .ro_mask = 0xFFA0,
+ .emu_mask = 0xFFBF,
.init = xen_pt_devctrl2_reg_init,
.u.w.read = xen_pt_word_reg_read,
.u.w.write = xen_pt_word_reg_write,
--
2.34.1
