Re: [Qemu-devel] [PATCH 2/2] Make kvm_enabled unavailable to non-target devices

[Anthony Liguori <anthony@codemonkey.ws>]

On 04/02/2010 10:46 AM, Blue Swirl wrote:
> Signed-off-by: Blue Swirl<blauwirbel@gmail.com>
> ---
>   hw/acpi.c   |   10 +++++-----
>   hw/pc.h     |    2 +-
>   hw/poison.h |    3 +++
>   3 files changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/hw/acpi.c b/hw/acpi.c
> index 5c01c2e..7c2b109 100644
> --- a/hw/acpi.c
> +++ b/hw/acpi.c
> @@ -51,7 +51,7 @@ typedef struct PIIX4PMState {
>       qemu_irq irq;
>       qemu_irq cmos_s3;
>       qemu_irq smi_irq;
> -    int kvm_enabled;
> +    int kvm_is_enabled;
>   } PIIX4PMState;
>
>   #define RSM_STS (1<<  15)
> @@ -482,7 +482,7 @@ static void piix4_reset(void *opaque)
>       pci_conf[0x5a] = 0;
>       pci_conf[0x5b] = 0;
>
> -    if (s->kvm_enabled) {
> +    if (s->kvm_is_enabled) {
>           /* Mark SMM as already inited (until KVM supports SMM). */
>           pci_conf[0x5B] = 0x02;
>       }
> @@ -502,7 +502,7 @@ static void piix4_powerdown(void *opaque, int irq,
> int power_failing)
>
>   i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
>                          qemu_irq sci_irq, qemu_irq cmos_s3, qemu_irq smi_irq,
> -                       int kvm_enabled)
> +                       int kvm_is_enabled)
>   {
>       PIIX4PMState *s;
>       uint8_t *pci_conf;
> @@ -529,8 +529,8 @@ i2c_bus *piix4_pm_init(PCIBus *bus, int devfn,
> uint32_t smb_io_base,
>
>       register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
>
> -    s->kvm_enabled = kvm_enabled;
> -    if (s->kvm_enabled) {
> +    s->kvm_is_enabled = kvm_is_enabled;
> +    if (s->kvm_is_enabled) {
>           /* Mark SMM as already inited to prevent SMM from running.
> KVM does not
>            * support SMM mode. */
>           pci_conf[0x5B] = 0x02;
> diff --git a/hw/pc.h b/hw/pc.h
> index 5f86b37..08a541d 100644
> --- a/hw/pc.h
> +++ b/hw/pc.h
> @@ -92,7 +92,7 @@ int acpi_table_add(const char *table_desc);
>
>   i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
>                          qemu_irq sci_irq, qemu_irq cmos_s3, qemu_irq smi_irq,
> -                       int kvm_enabled);
> +                       int kvm_is_enabled);
>   void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
>   void piix4_acpi_system_hot_add_init(PCIBus *bus);
>
> diff --git a/hw/poison.h b/hw/poison.h
> index d7db7f4..18b9657 100644
> --- a/hw/poison.h
> +++ b/hw/poison.h
> @@ -46,5 +46,8 @@
>   #pragma GCC poison CPU_INTERRUPT_VIRQ
>   #pragma GCC poison CPU_INTERRUPT_NMI
>
> +#pragma GCC poison kvm_allowed
> +#pragma GCC poison kvm_enabled
>
>    

kvm_enabled() is a macro.  I dont' think this poison pragma is actually 
meaningful.

Regards,

Anthony Liguori

>   #endif
>   #endif
>