Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-04 12:16:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

habanalabs: fix VA range calculation

Browse Source 
Current implementation is fixing the page size to PAGE_SIZE whereas the
input page size may be different.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ohad Sharabi 2022-11-20 15:12:26 +02:00 committed by Oded Gabbay
parent 5354a2a001
commit 19a17a9fb4
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/misc/habanalabs/common/memory.c
View File

@ -2508,24 +2508,20 @@ static int va_range_init(struct hl_device *hdev, struct hl_va_range **va_ranges,
/*
* PAGE_SIZE alignment
* it is the callers responsibility to align the addresses if the
* it is the caller's responsibility to align the addresses if the
* page size is not a power of 2
*/
if (is_power_of_2(page_size)) {
if (start & (PAGE_SIZE - 1)) {
start &= PAGE_MASK;
start += PAGE_SIZE;
}
start = round_up(start, page_size);
/*
* The end of the range is inclusive, hence we need to align it
* to the end of the last full page in the range. For example if
* end = 0x3ff5 with page size 0x1000, we need to align it to
* 0x2fff. The remainig 0xff5 bytes do not form a full page.
* 0x2fff. The remaining 0xff5 bytes do not form a full page.
*/
if ((end + 1) & (PAGE_SIZE - 1))
end = ((end + 1) & PAGE_MASK) - 1;
end = round_down(end + 1, page_size) - 1;
}
if (start >= end) {