[v6] xen: Support grant mappings

[PATCH v6 8/8] hw/arm: xen: Enable use of grant mappings

Posted by Edgar E. Iglesias 6 months, 1 week ago

From: "Edgar E. Iglesias" <edgar.iglesias@amd.com>

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
---
 hw/arm/xen_arm.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
index 15fa7dfa84..6fad829ede 100644
--- a/hw/arm/xen_arm.c
+++ b/hw/arm/xen_arm.c
@@ -125,6 +125,11 @@ static void xen_init_ram(MachineState *machine)
                                  GUEST_RAM1_BASE, ram_size[1]);
         memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi);
     }
+
+    /* Setup support for grants.  */
+    memory_region_init_ram(&xen_grants, NULL, "xen.grants", block_len,
+                           &error_fatal);
+    memory_region_add_subregion(sysmem, XEN_GRANT_ADDR_OFF, &xen_grants);
 }
 
 void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
-- 
2.40.1

Re: [PATCH v6 8/8] hw/arm: xen: Enable use of grant mappings

Posted by Manos Pitsidianakis 6 months ago

On Thu, 16 May 2024 18:48, "Edgar E. Iglesias" <edgar.iglesias@gmail.com> wrote:
>From: "Edgar E. Iglesias" <edgar.iglesias@amd.com>
>
>Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
>Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
>---
> hw/arm/xen_arm.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
>diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
>index 15fa7dfa84..6fad829ede 100644
>--- a/hw/arm/xen_arm.c
>+++ b/hw/arm/xen_arm.c
>@@ -125,6 +125,11 @@ static void xen_init_ram(MachineState *machine)
>                                  GUEST_RAM1_BASE, ram_size[1]);
>         memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi);
>     }
>+
>+    /* Setup support for grants.  */
>+    memory_region_init_ram(&xen_grants, NULL, "xen.grants", block_len,
>+                           &error_fatal);
>+    memory_region_add_subregion(sysmem, XEN_GRANT_ADDR_OFF, &xen_grants);
> }
> 
> void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
>-- 
>2.40.1
>
>

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>