Re: [PATCH 3/8] hw/pci-host/designware: Add 'host_mem' variable for clarity

[Gustavo Romero]

Hi Phil,

On 10/12/23 9:18 AM, Philippe Mathieu-Daudé wrote:
> designware_pcie_root_realize() uses get_system_memory()
> as the "host side memory region", as opposed to the "PCI
> side" one. Introduce the 'host_mem' variable for clarity.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>   hw/pci-host/designware.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/hw/pci-host/designware.c b/hw/pci-host/designware.c
> index 692e0731cd..bacb2bdb2d 100644
> --- a/hw/pci-host/designware.c
> +++ b/hw/pci-host/designware.c
> @@ -393,6 +393,7 @@ static void designware_pcie_root_realize(PCIDevice *dev, 
> Error **errp)
>   {
>       DesignwarePCIERoot *root = DESIGNWARE_PCIE_ROOT(dev);
>       DesignwarePCIEHost *host = designware_pcie_root_to_host(root);
> +    MemoryRegion *host_mem = get_system_memory();
>       MemoryRegion *address_space = &host->pci.memory;
>       PCIBridge *br = PCI_BRIDGE(dev);
>       DesignwarePCIEViewport *viewport;
> @@ -433,7 +434,7 @@ static void designware_pcie_root_realize(PCIDevice *dev, 
> Error **errp)
>           viewport->cr[0]   = DESIGNWARE_PCIE_ATU_TYPE_MEM;
>   
>           source      = &host->pci.address_space_root;
> -        destination = get_system_memory();
> +        destination = host_mem;
>           direction   = "Inbound";
>   
>           /*
> @@ -458,7 +459,7 @@ static void designware_pcie_root_realize(PCIDevice *dev, 
> Error **errp)
>   
>           destination = &host->pci.memory;
>           direction   = "Outbound";
> -        source      = get_system_memory();
> +        source      = host_mem;
>   
>           /*
>            * Configure MemoryRegion implementing CPU -> PCI memory

Reviewed-by: Gustavo Romero <gustavo.romero@linaro.org>

This patch can get merged independently of this series.


Cheers,
Gustavo