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Merge tag 'LA.UM.9.12.r1-16200-SMxx50.QSSI12.0' of https://git.codelinaro.org/clo/la/kernel/msm-4.19 into android13-4.19-kona

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"LA.UM.9.12.r1-16200-SMxx50.QSSI12.0"

* tag 'LA.UM.9.12.r1-16200-SMxx50.QSSI12.0' of https://git.codelinaro.org/clo/la/kernel/msm-4.19:
  mdm: dataipa: increase the size of prefetch buffer
  exec: Force single empty string when argv is empty
  BACKPORT: FROMLIST: mm: protect free_pgtables with mmap_lock write lock in exit_mmap
  qseecom: Release ion buffer in case of keymaster TA

Change-Id: I599d46bee0c79200fd55ff0705dd8b5d51ecc2d8
This commit is contained in:
Michael Bestas
2023-10-16 15:03:49 +03:00
parent dd55724109 c0f6b8e42d
commit 940cd040d3
3 changed files with 32 additions and 8 deletions
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24
drivers/misc/qseecom.c
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@@ -3153,6 +3153,30 @@ static int qseecom_prepare_unload_app(struct qseecom_dev_handle *data)
pr_debug("prepare to unload app(%d)(%s), pending %d\n",
data->client.app_id, data->client.app_name,
data->client.unload_pending);
/* For keymaster we are not going to unload so no need to add it in
* unload app pending list as soon as we identify release ion buffer
* and return .
*/
if (!memcmp(data->client.app_name, "keymaste", strlen("keymaste"))) {
if (data->client.dmabuf) {
/* Each client will get same KM TA loaded handle but
* will allocate separate shared buffer during
* loading of TA, as client can't unload KM TA so we
* will only free out shared buffer and return early
* to avoid any ion buffer leak.
*/
qseecom_vaddr_unmap(data->client.sb_virt,
data->client.sgt, data->client.attach,
data->client.dmabuf);
MAKE_NULL(data->client.sgt,
data->client.attach, data->client.dmabuf);
}
__qseecom_free_tzbuf(&data->sglistinfo_shm);
data->released = true;
return 0;
}
if (data->client.unload_pending)
return 0;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);

2
drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_fltrt_i.h
View File

@@ -44,7 +44,7 @@ enum ipa_fltrt_equations {
#define IPA3_0_HW_TBL_ADDR_MASK (127)
#define IPA3_0_HW_RULE_BUF_SIZE (256)
#define IPA3_0_HW_RULE_START_ALIGNMENT (7)
#define IPA3_0_HW_RULE_PREFETCH_BUF_SIZE (128)
#define IPA3_0_HW_RULE_PREFETCH_BUF_SIZE (256)
/*

14
mm/mmap.c
View File

@@ -3198,10 +3198,9 @@ void exit_mmap(struct mm_struct *mm)
(void)__oom_reap_task_mm(mm);
set_bit(MMF_OOM_SKIP, &mm->flags);
down_write(&mm->mmap_sem);
up_write(&mm->mmap_sem);
}
down_write(&mm->mmap_sem);
if (mm->locked_vm) {
vma = mm->mmap;
while (vma) {
@@ -3214,8 +3213,11 @@ void exit_mmap(struct mm_struct *mm)
arch_exit_mmap(mm);
vma = mm->mmap;
if (!vma) /* Can happen if dup_mmap() received an OOM */
if (!vma) {
/* Can happen if dup_mmap() received an OOM */
up_write(&mm->mmap_sem);;
return;
}
lru_add_drain();
flush_cache_mm(mm);
@@ -3226,16 +3228,14 @@ void exit_mmap(struct mm_struct *mm)
free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, USER_PGTABLES_CEILING);
tlb_finish_mmu(&tlb, 0, -1);
/*
* Walk the list again, actually closing and freeing it,
* with preemption enabled, without holding any MM locks.
*/
/* Walk the list again, actually closing and freeing it. */
while (vma) {
if (vma->vm_flags & VM_ACCOUNT)
nr_accounted += vma_pages(vma);
vma = remove_vma(vma);
cond_resched();
}
up_write(&mm->mmap_sem);
vm_unacct_memory(nr_accounted);
}