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How to allocate 500MB+ physically contiguous memory in a Linux kernel module and copy data to that memory from a userspace process?

score 39 · Answer 1 · 2024-03-24T15:13:29.440000

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How to allocate 500MB+ physically contiguous memory in a Linux kernel module and copy data to that memory from a userspace process?

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score 103 · Answer 2 · 2023-11-15T18:12:33.930000

Increasing size for Linux kernel module kfifo_alloc() which fails for 128MB

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score 25 · Answer 3 · 2023-11-12T16:16:04.387000

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score 268 · Answer 4 · 2023-05-26T17:41:01.550000

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score 173 · Answer 5 · 2023-03-26T08:25:44.473000

How to correctly implement kmalloc using C?

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score 98 · Answer 6 · 2023-02-07T11:41:21.790000

Why my program is failing with "dereferencing pointer to incomplete type ‘struct kmem_cache’

98 views Asked by MankPan At 07 February 2023 at 11:41

score 228 · Answer 7 · 2022-10-31T16:17:37.603000

vmalloc() allocates from vm_struct list

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score 648 · Answer 8 · 2022-08-26T11:33:34.193000

How to pin and get kernel pages in Linux?

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score 225 · Answer 9 · 2022-07-17T12:47:28.187000

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225 views Asked by cryptobeginner At 17 July 2022 at 12:47

score 97 · Answer 10 · 2022-01-06T05:28:31.077000

Will mmu be used when cpu access virtual memory allocated via kmalloc?

97 views Asked by Chen Li At 06 January 2022 at 05:28

score 1183 · Answer 11 · 2021-05-06T15:01:54.250000

Dynamic Array in Linux Kernel Module with kmalloc

1.1k views Asked by Chrissi At 06 May 2021 at 15:01

score 50 · Answer 12 · 2020-12-18T18:50:38.860000

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50 views Asked by Mr P At 18 December 2020 at 18:50

score 929 · Answer 13 · 2020-06-20T03:23:55.920000

How to comprehend "You can use the slab cache allocator(i.e. kmem_cache_create or kmem_cache_create_usercopy) to allocate many identical objects"?

score 547 · Answer 14 · 2020-04-08T02:18:32.407000

use vmalloc memory to do DMA?

547 views Asked by randomeval At 08 April 2020 at 02:18

score 702 · Answer 15 · 2020-02-27T15:38:15.540000

What is the relation between the smallest kmalloc() allocation and memory page size?

702 views Asked by narotello At 27 February 2020 at 15:38

score 866 · Answer 16 · 2020-01-17T11:55:26.980000

Linux kernel NULL-pointer dereference in memset from kzalloc

866 views Asked by red0ct At 17 January 2020 at 11:55

score 2232 · Answer 17 · 2019-11-13T12:57:48.327000

Memory Mapping in Linux Kernel - use of vamlloc() and kmalloc()

2.2k views Asked by Usr1 At 13 November 2019 at 12:57

score 674 · Answer 18 · 2019-05-29T06:35:42.810000

How kmalloc() and vmalloc() used in 32bit vs 64bit systems?

674 views Asked by Usr1 At 29 May 2019 at 06:35

score 792 · Answer 19 · 2019-05-15T13:24:08.400000

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792 views Asked by Victor Hanna At 15 May 2019 at 13:24

score 36 · Answer 20 · 2019-03-12T05:24:36.097000

Freeing platform driver device struct

36 views Asked by foo_l At 12 March 2019 at 05:24

TechQA.

List Question

How to allocate 500MB+ physically contiguous memory in a Linux kernel module and copy data to that memory from a userspace process?

Increasing size for Linux kernel module kfifo_alloc() which fails for 128MB

Information on kernel linux movable memory (__GFP_MOVABLE flag)

kmalloc and slab relationship

How to correctly implement kmalloc using C?

Why my program is failing with "dereferencing pointer to incomplete type ‘struct kmem_cache’

vmalloc() allocates from vm_struct list

How to pin and get kernel pages in Linux?

`aligned_alloc` in Linux Kernel Space when using kmalloc

Will mmu be used when cpu access virtual memory allocated via kmalloc?

Dynamic Array in Linux Kernel Module with kmalloc

error @ sk_prot_alloc+0x9a/0x150 in linux kernel

How to comprehend "You can use the slab cache allocator(i.e. kmem_cache_create or kmem_cache_create_usercopy) to allocate many identical objects"?

use vmalloc memory to do DMA?

What is the relation between the smallest kmalloc() allocation and memory page size?

Linux kernel NULL-pointer dereference in memset from kzalloc

Memory Mapping in Linux Kernel - use of vamlloc() and kmalloc()

How kmalloc() and vmalloc() used in 32bit vs 64bit systems?

how can I fix copy_from_user doesn't work?

Freeing platform driver device struct

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