Hi Neelesh,
You need to give some untyped memory objects to allocman before it can create kernel objects. I would encourage you to try and use the 'bootstrap_use_current_simple' if possible (this is what we do in sel4test for example https://github.com/seL4/sel4test/blob/master/apps/sel4test-driver/src/main.c...).
Otherwise if you look at bootstrap_use_current_simple you will that it first does bootstrap_use_current_1level and then allocman_add_simple_untypeds, which in the end boils down to calls to allocman_utspace_add_uts
Adrian
On Wed 26-Oct-2016 8:58 AM, Neelesh Vemula wrote: Hi
I have created a new process from the root/init task. In the new process I have the following code for initializing the allocman as below:
vka_t vka; allocman_t *allocman; vspace_t vspace;
#define ALLOCATOR_STATIC_POOL_SIZE ((1 << seL4_PageBits) * 10) UNUSED static char allocator_mem_pool[ALLOCATOR_STATIC_POOL_SIZE];
#define ALLOCATOR_VIRTUAL_POOL_SIZE ((1 << seL4_PageBits) * 100)
int main(int argc, char **argv) {
allocman = bootstrap_use_current_1level(SEL4UTILS_CNODE_SLOT, CONFIG_SEL4UTILS_CSPACE_SIZE_BITS, 0, (1u << CONFIG_SEL4UTILS_CSPACE_SIZE_BITS), ALLOCATOR_STATIC_POOL_SIZE, allocator_mem_pool);
allocman_make_vka(&vka, allocman);
vka_object_t ep_object = {0}; error = vka_alloc_endpoint(&vka, &ep_object); ZF_LOGF_IFERR(error, "Failed to allocate new endpoint object.\n");
I have the following definition structure shared as
enum sel4utils_cspace_layout { /* * The root cnode (with appropriate guard) */ SEL4UTILS_CNODE_SLOT = 1, /* The slot on the cspace that fault_endpoint is put if * sel4utils_configure_process is used. */ SEL4UTILS_ENDPOINT_SLOT = 2,
SEL4UTILS_PD_SLOT = 3,
FREE_SLOT = 4, };
This particular program has compiled for zynq-7000 platform and when running it I get the following output in the stdout :
Just entered the user function vka_alloc_object@object.h:51mailto:vka_alloc_object@object.h:51 Failed to allocate object of size 16, error 1
Assertion failed: error == 0 (/apps/zynq-comm-user/src/main.c: main: 71)
I have been not able to figure out why this error is occurring. I can only guess that the allocman was not initialized properly. Can someone help me with what I may have done wrong?
Regards Neelesh Vemula
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