samsung_sm8750/android_kernel_samsung_sm8750-devicetrees
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: dts: msm: Add swiotlb command line parameter for VMs

Browse Source 
With the recent kernel upgrade to 6.4, swiotlb_init() path is taken
because of the new kernel config CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC,
which is enabled by default. But this should not done for trusted VMs
supported on Sun and Pineapple VMs, as these VMs would be using carveout
swiotlb memory set up separately by virtio mmio driver through the
feature CONFIG_SWIOTLB_NONLINEAR. Hence, add swiotlb=noforce kernel
command line to disable generic swiotlb setup/init for VMs. Without
this option set, VM boot up failure is observed.

Change-Id: Ia35cd9a2f95f41b0b0daa6cf75799fd4432a95bd
Signed-off-by: Sahitya Tummala <quic_stummala@quicinc.com>
This commit is contained in:
Sahitya Tummala
2023-10-12 11:06:20 +05:30
parent 59896c77b2
commit 583aa96f35
2 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
qcom/pineapple-vm.dtsi
View File

@@ -12,7 +12,7 @@
interrupt-parent = <&vgic>;
chosen {
bootargs = "nokaslr log_buf_len=256K console=hvc0 loglevel=8";
bootargs = "nokaslr log_buf_len=256K console=hvc0 loglevel=8 swiotlb=noforce";
};
cpus {

2
qcom/sun-vm.dtsi
View File

@@ -12,7 +12,7 @@
interrupt-parent = <&vgic>;
chosen {
bootargs = "nokaslr log_buf_len=256K console=hvc0 loglevel=8";
bootargs = "nokaslr log_buf_len=256K console=hvc0 loglevel=8 swiotlb=noforce";
};
cpus {