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ANDROID: gunyah: qtvm: Check if VMM has provided the device-tree

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Operate on the device-tree config only if a device-tree has been
provided by the VMM. The offsets won't make sense to RM otherwise.

Bug: 410870784
Change-Id: Ia2ccd3ebe8cce5400a5ff0f023f3262a340fab08
Signed-off-by: Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>
This commit is contained in:
Prakruthi Deepak Heragu
2025-04-10 17:25:51 -07:00
committed by Vincent Donnefort
parent 2bd8282ef0
commit 138c9f1dec
1 changed files with 12 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/virt/gunyah/gunyah_qtvm.c
+12 -10
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@@ -78,19 +78,21 @@ static int gunyah_qtvm_pre_vm_configure(struct gunyah_vm *ghvm)
ghvm->config_image.image_offset = 0;
ghvm->config_image.image_size = PAS_VM_METADATA_SZ;
ghvm->config_image.dtb_offset = ghvm->dtb.config.guest_phys_addr -
if (ghvm->dtb.config.size > 0) {
ghvm->config_image.dtb_offset = ghvm->dtb.config.guest_phys_addr -
gunyah_gfn_to_gpa(ghvm->config_image.parcel.start);
ghvm->config_image.dtb_size = ghvm->dtb.config.size;
ghvm->config_image.dtb_size = ghvm->dtb.config.size;
if ((ghvm->dtb.config.guest_phys_addr + ghvm->config_image.dtb_size) >
(gunyah_gfn_to_gpa(ghvm->config_image.parcel.start) +
if ((ghvm->dtb.config.guest_phys_addr + ghvm->config_image.dtb_size) >
(gunyah_gfn_to_gpa(ghvm->config_image.parcel.start) +
gunyah_gfn_to_gpa(ghvm->config_image.parcel.pages))) {
/*
* DTB is out of the config image bounds.
* This is should not happen!
*/
dev_err(ghvm->parent, "DTB is outside the image parcel\n");
return -EINVAL;
/*
* DTB is out of the config image bounds.
* This is should not happen!
*/
dev_err(ghvm->parent, "DTB is outside the image parcel\n");
return -EINVAL;
}
}
/*