Reserve memory defined through "reg" is unconditionally set as reserve
memory, so these reserve memory regions can also be successfully set in
the crash kernel. However, if they are also used as CMA memory and
their starting addresses are not within the accessible range of the
crash kernel, it will cause the following memory access exception.
On the other hand, reserve memory defined through the combination of
"alloc-ranges" and "size" will be allocated from the memory space
accessible to the current kernel. If there is no memory that meets the
corresponding restriction conditions, allocation will fail, thus
avoiding the memory access exception mentioned earlier. For the crash
kernel, it is acceptable for allocation of reserve memory to fail in
such cases.
At the same time, verify the npu working problem through python3 label_image.py
-d /usr/lib64/libethosu_delegate.so -i grace_hopper.bmp -l labels.txt. No
exceptions have been found yet
Unable to handle kernel paging request at virtual address fffffffe00000000
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
swapper pgtable: 4k pages, 39-bit VAs, pgdp=00000000defd8000
[fffffffe00000000] pgd=10000000fd4a7003, p4d=10000000fd4a7003,
pud=10000000fd4a7003, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W
6.1.83-yocto-standard #1
Hardware name: NXP i.MX93 11X11 EVK board (DT)
pstate: 00400009 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : cma_init_reserved_areas+0xb4/0x24c
lr : cma_init_reserved_areas+0x88/0x24c
sp : ffffffc00b32bd40
x29: ffffffc00b32bd40 x28: 0000000000000680 x27: fffffffe00000000
x26: ffffffc009866078 x25: ffffffc00974e5e8 x24: ffffffc00b2b9d70
x23: 0000000000000000 x22: ffffffc00b2b9dd8 x21: 00000000000c0000
x20: ffffffc0098f6008 x19: ffffffc00b2b9d70 x18: 00000000fffffffd
x17: 20647261646e6174 x16: 732d6f74636f792d x15: ffffffc00b32b2e0
x14: 0000000000000000 x13: 303278302f303178 x12: 302b6b726f665f6d
x11: 656572665f74696e x10: 0000000000000004 x9 : ffffffc00919c8f4
x8 : ffffff80214f8000 x7 : 00000000d6d64d8a x6 : 00000000d0855cef
x5 : 00ffffffffffffff x4 : 0000000000000001 x3 : ffffffc0098f6008
x2 : 0000000000000001 x1 : ffffffc00a125700 x0 : 0000000000000000
Call trace:
cma_init_reserved_areas+0xb4/0x24c
do_one_initcall+0xb0/0x33c
kernel_init_freeable+0x2d4/0x344
kernel_init+0x30/0x140
ret_from_fork+0x10/0x20
Signed-off-by: Xiaolei Wang <xiaolei.w...@windriver.com>
---
arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index d58bce2a86e2..50822162bf9a 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
@@ -36,7 +36,8 @@ linux,cma {
ethosu_mem: ethosu_region@C0000000 {
compatible = "shared-dma-pool";
reusable;
- reg = <0x0 0xC0000000 0x0 0x10000000>;
+ alloc-ranges = <0 0xB0000000 0 0x20000000>;
+ size = <0 0x10000000>;
};
vdev0vring0: vdev0vring0@a4000000 {
--
2.25.1
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