restore lost packages from 0.2.3 + fix overwritten 0.2.4 files

- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
2026-06-19 12:39:14 +03:00
parent ffbe098ef8
commit dc68054305
6418 changed files with 7066233 additions and 8670 deletions
@@ -0,0 +1,207 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2024-2025, NVIDIA CORPORATION & AFFILIATES
+ */
+#ifndef __GENERIC_PT_COMMON_H
+#define __GENERIC_PT_COMMON_H
+
+#include <linux/types.h>
+#include <linux/build_bug.h>
+#include <linux/bits.h>
+
+/**
+ * DOC: Generic Radix Page Table
+ *
+ * Generic Radix Page Table is a set of functions and helpers to efficiently
+ * parse radix style page tables typically seen in HW implementations. The
+ * interface is built to deliver similar code generation as the mm's pte/pmd/etc
+ * system by fully inlining the exact code required to handle each table level.
+ *
+ * Like the mm subsystem each format contributes its parsing implementation
+ * under common names and the common code implements the required algorithms.
+ *
+ * The system is divided into three logical levels:
+ *
+ *  - The page table format and its manipulation functions
+ *  - Generic helpers to give a consistent API regardless of underlying format
+ *  - An algorithm implementation (e.g. IOMMU/DRM/KVM/MM)
+ *
+ * Multiple implementations are supported. The intention is to have the generic
+ * format code be re-usable for whatever specialized implementation is required.
+ * The generic code is solely about the format of the radix tree; it does not
+ * include memory allocation or higher level decisions that are left for the
+ * implementation.
+ *
+ * The generic framework supports a superset of functions across many HW
+ * implementations:
+ *
+ *  - Entries comprised of contiguous blocks of IO PTEs for larger page sizes
+ *  - Multi-level tables, up to 6 levels. Runtime selected top level
+ *  - Runtime variable table level size (ARM's concatenated tables)
+ *  - Expandable top level allowing dynamic sizing of table levels
+ *  - Optional leaf entries at any level
+ *  - 32-bit/64-bit virtual and output addresses, using every address bit
+ *  - Dirty tracking
+ *  - Sign extended addressing
+ */
+
+/**
+ * struct pt_common - struct for all page table implementations
+ */
+struct pt_common {
+	/**
+	 * @top_of_table: Encodes the table top pointer and the top level in a
+	 * single value. Must use READ_ONCE/WRITE_ONCE to access it. The lower
+	 * bits of the aligned table pointer are used for the level.
+	 */
+	uintptr_t top_of_table;
+	/**
+	 * @max_oasz_lg2: Maximum number of bits the OA can contain. Upper bits
+	 * must be zero. This may be less than what the page table format
+	 * supports, but must not be more.
+	 */
+	u8 max_oasz_lg2;
+	/**
+	 * @max_vasz_lg2: Maximum number of bits the VA can contain. Upper bits
+	 * are 0 or 1 depending on pt_full_va_prefix(). This may be less than
+	 * what the page table format supports, but must not be more. When
+	 * PT_FEAT_DYNAMIC_TOP is set this reflects the maximum VA capability.
+	 */
+	u8 max_vasz_lg2;
+	/**
+	 * @features: Bitmap of `enum pt_features`
+	 */
+	unsigned int features;
+};
+
+/* Encoding parameters for top_of_table */
+enum {
+	PT_TOP_LEVEL_BITS = 3,
+	PT_TOP_LEVEL_MASK = GENMASK(PT_TOP_LEVEL_BITS - 1, 0),
+};
+
+/**
+ * enum pt_features - Features turned on in the table. Each symbol is a bit
+ * position.
+ */
+enum pt_features {
+	/**
+	 * @PT_FEAT_DMA_INCOHERENT: Cache flush page table memory before
+	 * assuming the HW can read it. Otherwise a SMP release is sufficient
+	 * for HW to read it.
+	 */
+	PT_FEAT_DMA_INCOHERENT,
+	/**
+	 * @PT_FEAT_FULL_VA: The table can span the full VA range from 0 to
+	 * PT_VADDR_MAX.
+	 */
+	PT_FEAT_FULL_VA,
+	/**
+	 * @PT_FEAT_DYNAMIC_TOP: The table's top level can be increased
+	 * dynamically during map. This requires HW support for atomically
+	 * setting both the table top pointer and the starting table level.
+	 */
+	PT_FEAT_DYNAMIC_TOP,
+	/**
+	 * @PT_FEAT_SIGN_EXTEND: The top most bit of the valid VA range sign
+	 * extends up to the full pt_vaddr_t. This divides the page table into
+	 * three VA ranges::
+	 *
+	 *   0         -> 2^N - 1             Lower
+	 *   2^N       -> (MAX - 2^N - 1)     Non-Canonical
+	 *   MAX - 2^N -> MAX                 Upper
+	 *
+	 * In this mode pt_common::max_vasz_lg2 includes the sign bit and the
+	 * upper bits that don't fall within the translation are just validated.
+	 *
+	 * If not set there is no sign extension and valid VA goes from 0 to 2^N
+	 * - 1.
+	 */
+	PT_FEAT_SIGN_EXTEND,
+	/**
+	 * @PT_FEAT_FLUSH_RANGE: IOTLB maintenance is done by flushing IOVA
+	 * ranges which will clean out any walk cache or any IOPTE fully
+	 * contained by the range. The optimization objective is to minimize the
+	 * number of flushes even if ranges include IOVA gaps that do not need
+	 * to be flushed.
+	 */
+	PT_FEAT_FLUSH_RANGE,
+	/**
+	 * @PT_FEAT_FLUSH_RANGE_NO_GAPS: Like PT_FEAT_FLUSH_RANGE except that
+	 * the optimization objective is to only flush IOVA that has been
+	 * changed. This mode is suitable for cases like hypervisor shadowing
+	 * where flushing unchanged ranges may cause the hypervisor to reparse
+	 * significant amount of page table.
+	 */
+	PT_FEAT_FLUSH_RANGE_NO_GAPS,
+	/* private: */
+	PT_FEAT_FMT_START,
+};
+
+struct pt_amdv1 {
+	struct pt_common common;
+};
+
+enum {
+	/*
+	 * The memory backing the tables is encrypted. Use __sme_set() to adjust
+	 * the page table pointers in the tree. This only works with
+	 * CONFIG_AMD_MEM_ENCRYPT.
+	 */
+	PT_FEAT_AMDV1_ENCRYPT_TABLES = PT_FEAT_FMT_START,
+	/*
+	 * The PTEs are set to prevent cache incoherent traffic, such as PCI no
+	 * snoop. This is set either at creation time or before the first map
+	 * operation.
+	 */
+	PT_FEAT_AMDV1_FORCE_COHERENCE,
+};
+
+struct pt_vtdss {
+	struct pt_common common;
+};
+
+enum {
+	/*
+	 * The PTEs are set to prevent cache incoherent traffic, such as PCI no
+	 * snoop. This is set either at creation time or before the first map
+	 * operation.
+	 */
+	PT_FEAT_VTDSS_FORCE_COHERENCE = PT_FEAT_FMT_START,
+	/*
+	 * Prevent creating read-only PTEs. Used to work around HW errata
+	 * ERRATA_772415_SPR17.
+	 */
+	PT_FEAT_VTDSS_FORCE_WRITEABLE,
+};
+
+struct pt_riscv_32 {
+	struct pt_common common;
+};
+
+struct pt_riscv_64 {
+	struct pt_common common;
+};
+
+enum {
+	/*
+	 * Support the 64k contiguous page size following the Svnapot extension.
+	 */
+	PT_FEAT_RISCV_SVNAPOT_64K = PT_FEAT_FMT_START,
+
+};
+
+struct pt_x86_64 {
+	struct pt_common common;
+};
+
+enum {
+	/*
+	 * The memory backing the tables is encrypted. Use __sme_set() to adjust
+	 * the page table pointers in the tree. This only works with
+	 * CONFIG_AMD_MEM_ENCRYPT.
+	 */
+	PT_FEAT_X86_64_AMD_ENCRYPT_TABLES = PT_FEAT_FMT_START,
+};
+
+#endif