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-rw-r--r--target/linux/layerscape/patches-4.9/820-kvm-support-layerscape.patch239
1 files changed, 0 insertions, 239 deletions
diff --git a/target/linux/layerscape/patches-4.9/820-kvm-support-layerscape.patch b/target/linux/layerscape/patches-4.9/820-kvm-support-layerscape.patch
deleted file mode 100644
index a652660f9a..0000000000
--- a/target/linux/layerscape/patches-4.9/820-kvm-support-layerscape.patch
+++ /dev/null
@@ -1,239 +0,0 @@
-From fe22151c95c02c6bb145ea6c3685941e8fb09d60 Mon Sep 17 00:00:00 2001
-From: Yangbo Lu <yangbo.lu@nxp.com>
-Date: Thu, 5 Jul 2018 17:43:16 +0800
-Subject: [PATCH 32/32] kvm: support layerscape
-
-This is an integrated patch for layerscape kvm support.
-
-Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
-Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
-Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
-Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
----
- arch/arm/include/asm/kvm_mmu.h | 3 +-
- arch/arm/kvm/mmu.c | 56 ++++++++++++++++++++++++++++++--
- arch/arm64/include/asm/kvm_mmu.h | 14 ++++++--
- virt/kvm/arm/vgic/vgic-its.c | 24 +++++++++++---
- virt/kvm/arm/vgic/vgic-v2.c | 3 +-
- 5 files changed, 88 insertions(+), 12 deletions(-)
-
---- a/arch/arm/include/asm/kvm_mmu.h
-+++ b/arch/arm/include/asm/kvm_mmu.h
-@@ -55,7 +55,8 @@ void stage2_unmap_vm(struct kvm *kvm);
- int kvm_alloc_stage2_pgd(struct kvm *kvm);
- void kvm_free_stage2_pgd(struct kvm *kvm);
- int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
-- phys_addr_t pa, unsigned long size, bool writable);
-+ phys_addr_t pa, unsigned long size, bool writable,
-+ pgprot_t prot);
-
- int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);
-
---- a/arch/arm/kvm/mmu.c
-+++ b/arch/arm/kvm/mmu.c
-@@ -1020,9 +1020,11 @@ static int stage2_pmdp_test_and_clear_yo
- * @guest_ipa: The IPA at which to insert the mapping
- * @pa: The physical address of the device
- * @size: The size of the mapping
-+ * @prot: S2 page translation bits
- */
- int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
-- phys_addr_t pa, unsigned long size, bool writable)
-+ phys_addr_t pa, unsigned long size, bool writable,
-+ pgprot_t prot)
- {
- phys_addr_t addr, end;
- int ret = 0;
-@@ -1033,7 +1035,7 @@ int kvm_phys_addr_ioremap(struct kvm *kv
- pfn = __phys_to_pfn(pa);
-
- for (addr = guest_ipa; addr < end; addr += PAGE_SIZE) {
-- pte_t pte = pfn_pte(pfn, PAGE_S2_DEVICE);
-+ pte_t pte = pfn_pte(pfn, prot);
-
- if (writable)
- pte = kvm_s2pte_mkwrite(pte);
-@@ -1057,6 +1059,30 @@ out:
- return ret;
- }
-
-+#ifdef CONFIG_ARM64
-+static pgprot_t stage1_to_stage2_pgprot(pgprot_t prot)
-+{
-+ switch (pgprot_val(prot) & PTE_ATTRINDX_MASK) {
-+ case PTE_ATTRINDX(MT_DEVICE_nGnRE):
-+ case PTE_ATTRINDX(MT_DEVICE_nGnRnE):
-+ case PTE_ATTRINDX(MT_DEVICE_GRE):
-+ return PAGE_S2_DEVICE;
-+ case PTE_ATTRINDX(MT_NORMAL_NC):
-+ case PTE_ATTRINDX(MT_NORMAL):
-+ return (pgprot_val(prot) & PTE_SHARED)
-+ ? PAGE_S2
-+ : PAGE_S2_NS;
-+ }
-+
-+ return PAGE_S2_DEVICE;
-+}
-+#else
-+static pgprot_t stage1_to_stage2_pgprot(pgprot_t prot)
-+{
-+ return PAGE_S2_DEVICE;
-+}
-+#endif
-+
- static bool transparent_hugepage_adjust(kvm_pfn_t *pfnp, phys_addr_t *ipap)
- {
- kvm_pfn_t pfn = *pfnp;
-@@ -1308,6 +1334,19 @@ static int user_mem_abort(struct kvm_vcp
- hugetlb = true;
- gfn = (fault_ipa & PMD_MASK) >> PAGE_SHIFT;
- } else {
-+ if (!is_vm_hugetlb_page(vma)) {
-+ pte_t *pte;
-+ spinlock_t *ptl;
-+ pgprot_t prot;
-+
-+ pte = get_locked_pte(current->mm, memslot->userspace_addr, &ptl);
-+ prot = stage1_to_stage2_pgprot(__pgprot(pte_val(*pte)));
-+ pte_unmap_unlock(pte, ptl);
-+#ifdef CONFIG_ARM64
-+ if (pgprot_val(prot) == pgprot_val(PAGE_S2_NS))
-+ mem_type = PAGE_S2_NS;
-+#endif
-+ }
- /*
- * Pages belonging to memslots that don't have the same
- * alignment for userspace and IPA cannot be mapped using
-@@ -1345,6 +1384,11 @@ static int user_mem_abort(struct kvm_vcp
- if (is_error_noslot_pfn(pfn))
- return -EFAULT;
-
-+#ifdef CONFIG_ARM64
-+ if (pgprot_val(mem_type) == pgprot_val(PAGE_S2_NS)) {
-+ flags |= KVM_S2PTE_FLAG_IS_IOMAP;
-+ } else
-+#endif
- if (kvm_is_device_pfn(pfn)) {
- mem_type = PAGE_S2_DEVICE;
- flags |= KVM_S2PTE_FLAG_IS_IOMAP;
-@@ -1882,6 +1926,9 @@ int kvm_arch_prepare_memory_region(struc
- gpa_t gpa = mem->guest_phys_addr +
- (vm_start - mem->userspace_addr);
- phys_addr_t pa;
-+ pgprot_t prot;
-+ pte_t *pte;
-+ spinlock_t *ptl;
-
- pa = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
- pa += vm_start - vma->vm_start;
-@@ -1891,10 +1938,13 @@ int kvm_arch_prepare_memory_region(struc
- ret = -EINVAL;
- goto out;
- }
-+ pte = get_locked_pte(current->mm, mem->userspace_addr, &ptl);
-+ prot = stage1_to_stage2_pgprot(__pgprot(pte_val(*pte)));
-+ pte_unmap_unlock(pte, ptl);
-
- ret = kvm_phys_addr_ioremap(kvm, gpa, pa,
- vm_end - vm_start,
-- writable);
-+ writable, prot);
- if (ret)
- break;
- }
---- a/arch/arm64/include/asm/kvm_mmu.h
-+++ b/arch/arm64/include/asm/kvm_mmu.h
-@@ -167,7 +167,8 @@ void stage2_unmap_vm(struct kvm *kvm);
- int kvm_alloc_stage2_pgd(struct kvm *kvm);
- void kvm_free_stage2_pgd(struct kvm *kvm);
- int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
-- phys_addr_t pa, unsigned long size, bool writable);
-+ phys_addr_t pa, unsigned long size, bool writable,
-+ pgprot_t prot);
-
- int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);
-
-@@ -274,8 +275,15 @@ static inline void __coherent_cache_gues
-
- static inline void __kvm_flush_dcache_pte(pte_t pte)
- {
-- struct page *page = pte_page(pte);
-- kvm_flush_dcache_to_poc(page_address(page), PAGE_SIZE);
-+ if (pfn_valid(pte_pfn(pte))) {
-+ struct page *page = pte_page(pte);
-+ kvm_flush_dcache_to_poc(page_address(page), PAGE_SIZE);
-+ } else {
-+ void __iomem *va = ioremap_cache_ns(pte_pfn(pte) << PAGE_SHIFT, PAGE_SIZE);
-+
-+ kvm_flush_dcache_to_poc(va, PAGE_SIZE);
-+ iounmap(va);
-+ }
- }
-
- static inline void __kvm_flush_dcache_pmd(pmd_t pmd)
---- a/virt/kvm/arm/vgic/vgic-its.c
-+++ b/virt/kvm/arm/vgic/vgic-its.c
-@@ -176,6 +176,8 @@ static struct its_itte *find_itte(struct
-
- #define GIC_LPI_OFFSET 8192
-
-+#define VITS_TYPER_DEVBITS 17
-+
- /*
- * Finds and returns a collection in the ITS collection table.
- * Must be called with the its_lock mutex held.
-@@ -375,7 +377,7 @@ static unsigned long vgic_mmio_read_its_
- * To avoid memory waste in the guest, we keep the number of IDBits and
- * DevBits low - as least for the time being.
- */
-- reg |= 0x0f << GITS_TYPER_DEVBITS_SHIFT;
-+ reg |= GIC_ENCODE_SZ(VITS_TYPER_DEVBITS, 5) << GITS_TYPER_DEVBITS_SHIFT;
- reg |= 0x0f << GITS_TYPER_IDBITS_SHIFT;
-
- return extract_bytes(reg, addr & 7, len);
-@@ -601,16 +603,30 @@ static int vgic_its_cmd_handle_movi(stru
- * Check whether an ID can be stored into the corresponding guest table.
- * For a direct table this is pretty easy, but gets a bit nasty for
- * indirect tables. We check whether the resulting guest physical address
-- * is actually valid (covered by a memslot and guest accessbible).
-+ * is actually valid (covered by a memslot and guest accessible).
- * For this we have to read the respective first level entry.
- */
--static bool vgic_its_check_id(struct vgic_its *its, u64 baser, int id)
-+static bool vgic_its_check_id(struct vgic_its *its, u64 baser, u32 id)
- {
- int l1_tbl_size = GITS_BASER_NR_PAGES(baser) * SZ_64K;
-+ u64 indirect_ptr, type = GITS_BASER_TYPE(baser);
- int index;
-- u64 indirect_ptr;
- gfn_t gfn;
-
-+ switch (type) {
-+ case GITS_BASER_TYPE_DEVICE:
-+ if (id >= BIT_ULL(VITS_TYPER_DEVBITS))
-+ return false;
-+ break;
-+ case GITS_BASER_TYPE_COLLECTION:
-+ /* as GITS_TYPER.CIL == 0, ITS supports 16-bit collection ID */
-+ if (id >= BIT_ULL(16))
-+ return false;
-+ break;
-+ default:
-+ return false;
-+ }
-+
- if (!(baser & GITS_BASER_INDIRECT)) {
- phys_addr_t addr;
-
---- a/virt/kvm/arm/vgic/vgic-v2.c
-+++ b/virt/kvm/arm/vgic/vgic-v2.c
-@@ -290,7 +290,8 @@ int vgic_v2_map_resources(struct kvm *kv
- if (!static_branch_unlikely(&vgic_v2_cpuif_trap)) {
- ret = kvm_phys_addr_ioremap(kvm, dist->vgic_cpu_base,
- kvm_vgic_global_state.vcpu_base,
-- KVM_VGIC_V2_CPU_SIZE, true);
-+ KVM_VGIC_V2_CPU_SIZE, true,
-+ PAGE_S2_DEVICE);
- if (ret) {
- kvm_err("Unable to remap VGIC CPU to VCPU\n");
- goto out;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-29 20:06:02 +0000