shinys000114/kernel_common_drivers
1
0
Fork 0
mirror of https://github.com/hardkernel/kernel_common_drivers.git synced 2026-06-25 12:03:48 +09:00
Code Issues Packages Projects Releases Wiki Activity

mm: fix the multi-core startup crash problem caused by tvp. [1/1]

Browse Source 
PD#SWPL-121825

Problem:
system crash when multi-core startup.

Solution:
alloc memory before clear page table.

Verify:
ohm.

Change-Id: If30f7b4163d6ddbe5eaf816b1ff7c3530c3601e9
Signed-off-by: Jianxiong Pan <jianxiong.pan@amlogic.com>
This commit is contained in:
Jianxiong Pan
2023-08-30 15:24:11 +08:00
committed by Luan Yuan
parent c0235b7c43
commit 41f73dbdb3
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/media/common/codec_mm/codec_mm.c
+7
View File
@@ -3787,6 +3787,7 @@ void __nocfi get_mte_sync_tags_hook(void)
{
static DEFINE_MUTEX(lock);
struct cma *cma = NULL;
struct page *page = NULL;
#if defined(CONFIG_ARM64)
int ret;
@@ -3811,11 +3812,17 @@ void __nocfi get_mte_sync_tags_hook(void)
}
pr_info("%s, %s, %lx, %lx\n", __func__, cma_get_name(cma), cma->base_pfn, cma->count);
/* spin_lock_irqsave(&cma->lock, flags); */
page = cma_alloc(cma, cma->count, 0, 0);
if (!page) {
pr_err("cma alloc failed.\n");
return;
}
mutex_lock(&lock);
if (aml_init_mm)
tvp_setup_cma_full_pagemap(cma->base_pfn, cma->count);
/* spin_unlock_irqrestore(&cma->lock, flags); */
mutex_unlock(&lock);
cma_release(cma, page, cma->count);
}
#endif