From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
When failing to set the selected AIA mode, 'aia_mode' is left untouched.
This means that 'aia_mode' will not reflect the actual AIA mode,
retrieved in 'default_aia_mode',
This is benign for now, but it will impact QMP query commands that will
expose the 'aia_mode' value, retrieving the wrong value.
Set 'aia_mode' to 'default_aia_mode' if we fail to change the AIA mode
in KVM.
While we're at it, rework the log/warning messages to be a bit less
verbose. Instead of:
KVM AIA: default mode is emul
qemu-system-riscv64: warning: KVM AIA: failed to set KVM AIA mode
We can use a single warning message:
qemu-system-riscv64: warning: KVM AIA: failed to set KVM AIA mode 'auto', using default host mode 'emul'
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241028182037.290171-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
target/riscv/kvm/kvm-cpu.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
index 8233a32102..acc713c56a 100644
--- a/target/riscv/kvm/kvm-cpu.c
+++ b/target/riscv/kvm/kvm-cpu.c
@@ -1711,18 +1711,26 @@ void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift,
error_report("KVM AIA: failed to get current KVM AIA mode");
exit(1);
}
- qemu_log("KVM AIA: default mode is %s\n",
- kvm_aia_mode_str(default_aia_mode));
- if (default_aia_mode != aia_mode) {
+ if (default_aia_mode == aia_mode) {
+ qemu_log("KVM AIA: using default host mode '%s'\n",
+ kvm_aia_mode_str(default_aia_mode));
+ } else {
ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG,
KVM_DEV_RISCV_AIA_CONFIG_MODE,
&aia_mode, true, NULL);
- if (ret < 0)
- warn_report("KVM AIA: failed to set KVM AIA mode");
- else
- qemu_log("KVM AIA: set current mode to %s\n",
+ if (ret < 0) {
+ warn_report("KVM AIA: failed to set KVM AIA mode '%s', using "
+ "default host mode '%s'",
+ kvm_aia_mode_str(aia_mode),
+ kvm_aia_mode_str(default_aia_mode));
+
+ /* failed to change AIA mode, use default */
+ aia_mode = default_aia_mode;
+ } else {
+ qemu_log("KVM AIA: setting current mode to %s\n",
kvm_aia_mode_str(aia_mode));
+ }
}
ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG,
--
2.47.0