From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/arch/mips/kvm/mmu.c | 109 +++++++++++++++++++++---------------------------------
1 files changed, 42 insertions(+), 67 deletions(-)
diff --git a/kernel/arch/mips/kvm/mmu.c b/kernel/arch/mips/kvm/mmu.c
index 098a7af..28c366d 100644
--- a/kernel/arch/mips/kvm/mmu.c
+++ b/kernel/arch/mips/kvm/mmu.c
@@ -25,41 +25,9 @@
#define KVM_MMU_CACHE_MIN_PAGES 2
#endif
-static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
- int min, int max)
-{
- void *page;
-
- BUG_ON(max > KVM_NR_MEM_OBJS);
- if (cache->nobjs >= min)
- return 0;
- while (cache->nobjs < max) {
- page = (void *)__get_free_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
- cache->objects[cache->nobjs++] = page;
- }
- return 0;
-}
-
-static void mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc)
-{
- while (mc->nobjs)
- free_page((unsigned long)mc->objects[--mc->nobjs]);
-}
-
-static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc)
-{
- void *p;
-
- BUG_ON(!mc || !mc->nobjs);
- p = mc->objects[--mc->nobjs];
- return p;
-}
-
void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu)
{
- mmu_free_memory_cache(&vcpu->arch.mmu_page_cache);
+ kvm_mmu_free_memory_cache(&vcpu->arch.mmu_page_cache);
}
/**
@@ -136,6 +104,7 @@
static pte_t *kvm_mips_walk_pgd(pgd_t *pgd, struct kvm_mmu_memory_cache *cache,
unsigned long addr)
{
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
@@ -145,13 +114,14 @@
BUG();
return NULL;
}
- pud = pud_offset(pgd, addr);
+ p4d = p4d_offset(pgd, addr);
+ pud = pud_offset(p4d, addr);
if (pud_none(*pud)) {
pmd_t *new_pmd;
if (!cache)
return NULL;
- new_pmd = mmu_memory_cache_alloc(cache);
+ new_pmd = kvm_mmu_memory_cache_alloc(cache);
pmd_init((unsigned long)new_pmd,
(unsigned long)invalid_pte_table);
pud_populate(NULL, pud, new_pmd);
@@ -162,11 +132,11 @@
if (!cache)
return NULL;
- new_pte = mmu_memory_cache_alloc(cache);
+ new_pte = kvm_mmu_memory_cache_alloc(cache);
clear_page(new_pte);
pmd_populate_kernel(NULL, pmd, new_pte);
}
- return pte_offset(pmd, addr);
+ return pte_offset_kernel(pmd, addr);
}
/* Caller must hold kvm->mm_lock */
@@ -185,8 +155,8 @@
static bool kvm_mips_flush_gpa_pte(pte_t *pte, unsigned long start_gpa,
unsigned long end_gpa)
{
- int i_min = __pte_offset(start_gpa);
- int i_max = __pte_offset(end_gpa);
+ int i_min = pte_index(start_gpa);
+ int i_max = pte_index(end_gpa);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PTE - 1);
int i;
@@ -204,8 +174,8 @@
{
pte_t *pte;
unsigned long end = ~0ul;
- int i_min = __pmd_offset(start_gpa);
- int i_max = __pmd_offset(end_gpa);
+ int i_min = pmd_index(start_gpa);
+ int i_max = pmd_index(end_gpa);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PMD - 1);
int i;
@@ -213,7 +183,7 @@
if (!pmd_present(pmd[i]))
continue;
- pte = pte_offset(pmd + i, 0);
+ pte = pte_offset_kernel(pmd + i, 0);
if (i == i_max)
end = end_gpa;
@@ -232,8 +202,8 @@
{
pmd_t *pmd;
unsigned long end = ~0ul;
- int i_min = __pud_offset(start_gpa);
- int i_max = __pud_offset(end_gpa);
+ int i_min = pud_index(start_gpa);
+ int i_max = pud_index(end_gpa);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PUD - 1);
int i;
@@ -258,6 +228,7 @@
static bool kvm_mips_flush_gpa_pgd(pgd_t *pgd, unsigned long start_gpa,
unsigned long end_gpa)
{
+ p4d_t *p4d;
pud_t *pud;
unsigned long end = ~0ul;
int i_min = pgd_index(start_gpa);
@@ -269,7 +240,8 @@
if (!pgd_present(pgd[i]))
continue;
- pud = pud_offset(pgd + i, 0);
+ p4d = p4d_offset(pgd, 0);
+ pud = pud_offset(p4d + i, 0);
if (i == i_max)
end = end_gpa;
@@ -308,8 +280,8 @@
unsigned long end) \
{ \
int ret = 0; \
- int i_min = __pte_offset(start); \
- int i_max = __pte_offset(end); \
+ int i_min = pte_index(start); \
+ int i_max = pte_index(end); \
int i; \
pte_t old, new; \
\
@@ -334,15 +306,15 @@
int ret = 0; \
pte_t *pte; \
unsigned long cur_end = ~0ul; \
- int i_min = __pmd_offset(start); \
- int i_max = __pmd_offset(end); \
+ int i_min = pmd_index(start); \
+ int i_max = pmd_index(end); \
int i; \
\
for (i = i_min; i <= i_max; ++i, start = 0) { \
if (!pmd_present(pmd[i])) \
continue; \
\
- pte = pte_offset(pmd + i, 0); \
+ pte = pte_offset_kernel(pmd + i, 0); \
if (i == i_max) \
cur_end = end; \
\
@@ -357,8 +329,8 @@
int ret = 0; \
pmd_t *pmd; \
unsigned long cur_end = ~0ul; \
- int i_min = __pud_offset(start); \
- int i_max = __pud_offset(end); \
+ int i_min = pud_index(start); \
+ int i_max = pud_index(end); \
int i; \
\
for (i = i_min; i <= i_max; ++i, start = 0) { \
@@ -378,6 +350,7 @@
unsigned long end) \
{ \
int ret = 0; \
+ p4d_t *p4d; \
pud_t *pud; \
unsigned long cur_end = ~0ul; \
int i_min = pgd_index(start); \
@@ -388,7 +361,8 @@
if (!pgd_present(pgd[i])) \
continue; \
\
- pud = pud_offset(pgd + i, 0); \
+ p4d = p4d_offset(pgd, 0); \
+ pud = pud_offset(p4d + i, 0); \
if (i == i_max) \
cur_end = end; \
\
@@ -513,7 +487,7 @@
}
int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end,
- bool blockable)
+ unsigned flags)
{
handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, NULL);
@@ -552,7 +526,7 @@
(pte_dirty(old_pte) && !pte_dirty(hva_pte));
}
-void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
+int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
{
unsigned long end = hva + PAGE_SIZE;
int ret;
@@ -560,6 +534,7 @@
ret = handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, &pte);
if (ret)
kvm_mips_callbacks->flush_shadow_all(kvm);
+ return 0;
}
static int kvm_age_hva_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end,
@@ -705,8 +680,7 @@
goto out;
/* We need a minimum of cached pages ready for page table creation */
- err = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES,
- KVM_NR_MEM_OBJS);
+ err = kvm_mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES);
if (err)
goto out;
@@ -790,8 +764,7 @@
int ret;
/* We need a minimum of cached pages ready for page table creation */
- ret = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES,
- KVM_NR_MEM_OBJS);
+ ret = kvm_mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES);
if (ret)
return NULL;
@@ -836,8 +809,8 @@
static bool kvm_mips_flush_gva_pte(pte_t *pte, unsigned long start_gva,
unsigned long end_gva)
{
- int i_min = __pte_offset(start_gva);
- int i_max = __pte_offset(end_gva);
+ int i_min = pte_index(start_gva);
+ int i_max = pte_index(end_gva);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PTE - 1);
int i;
@@ -862,8 +835,8 @@
{
pte_t *pte;
unsigned long end = ~0ul;
- int i_min = __pmd_offset(start_gva);
- int i_max = __pmd_offset(end_gva);
+ int i_min = pmd_index(start_gva);
+ int i_max = pmd_index(end_gva);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PMD - 1);
int i;
@@ -871,7 +844,7 @@
if (!pmd_present(pmd[i]))
continue;
- pte = pte_offset(pmd + i, 0);
+ pte = pte_offset_kernel(pmd + i, 0);
if (i == i_max)
end = end_gva;
@@ -890,8 +863,8 @@
{
pmd_t *pmd;
unsigned long end = ~0ul;
- int i_min = __pud_offset(start_gva);
- int i_max = __pud_offset(end_gva);
+ int i_min = pud_index(start_gva);
+ int i_max = pud_index(end_gva);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PUD - 1);
int i;
@@ -916,6 +889,7 @@
static bool kvm_mips_flush_gva_pgd(pgd_t *pgd, unsigned long start_gva,
unsigned long end_gva)
{
+ p4d_t *p4d;
pud_t *pud;
unsigned long end = ~0ul;
int i_min = pgd_index(start_gva);
@@ -927,7 +901,8 @@
if (!pgd_present(pgd[i]))
continue;
- pud = pud_offset(pgd + i, 0);
+ p4d = p4d_offset(pgd, 0);
+ pud = pud_offset(p4d + i, 0);
if (i == i_max)
end = end_gva;
--
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