CPUTLB is now target-agnostic and can be moved to a more suitable
header.
Signed-off-by: Anton Johansson <a...@rev.ng>
---
include/exec/cpu-defs.h | 145 +------------------------------------
include/exec/tlb-common.h | 148 ++++++++++++++++++++++++++++++++++++++
2 files changed, 149 insertions(+), 144 deletions(-)
diff --git a/include/exec/cpu-defs.h b/include/exec/cpu-defs.h
index 0a600a312b..dff6c37f6b 100644
--- a/include/exec/cpu-defs.h
+++ b/include/exec/cpu-defs.h
@@ -25,10 +25,7 @@
#include "qemu/host-utils.h"
#include "qemu/thread.h"
-#ifndef CONFIG_USER_ONLY
-#include "exec/hwaddr.h"
-#endif
-#include "exec/memattrs.h"
+#include "exec/tlb-common.h"
#include "hw/core/cpu.h"
#include "cpu-param.h"
@@ -54,17 +51,7 @@
#include "exec/target_long.h"
-/*
- * Fix the number of mmu modes to 16, which is also the maximum
- * supported by the softmmu tlb api.
- */
-#define NB_MMU_MODES 16
-
#if defined(CONFIG_SOFTMMU) && defined(CONFIG_TCG)
-#include "exec/tlb-common.h"
-
-/* use a fully associative victim tlb of 8 entries */
-#define CPU_VTLB_SIZE 8
#define CPU_TLB_DYN_MIN_BITS 6
#define CPU_TLB_DYN_DEFAULT_BITS 8
@@ -91,136 +78,6 @@
#endif /* CONFIG_SOFTMMU && CONFIG_TCG */
-#if defined(CONFIG_SOFTMMU)
-/*
- * The full TLB entry, which is not accessed by generated TCG code,
- * so the layout is not as critical as that of CPUTLBEntry. This is
- * also why we don't want to combine the two structs.
- */
-typedef struct CPUTLBEntryFull {
- /*
- * @xlat_section contains:
- * - in the lower TARGET_PAGE_BITS, a physical section number
- * - with the lower TARGET_PAGE_BITS masked off, an offset which
- * must be added to the virtual address to obtain:
- * + the ram_addr_t of the target RAM (if the physical section
- * number is PHYS_SECTION_NOTDIRTY or PHYS_SECTION_ROM)
- * + the offset within the target MemoryRegion (otherwise)
- */
- hwaddr xlat_section;
-
- /*
- * @phys_addr contains the physical address in the address space
- * given by cpu_asidx_from_attrs(cpu, @attrs).
- */
- hwaddr phys_addr;
-
- /* @attrs contains the memory transaction attributes for the page. */
- MemTxAttrs attrs;
-
- /* @prot contains the complete protections for the page. */
- uint8_t prot;
-
- /* @lg_page_size contains the log2 of the page size. */
- uint8_t lg_page_size;
-
- /*
- * Additional tlb flags for use by the slow path. If non-zero,
- * the corresponding CPUTLBEntry comparator must have TLB_FORCE_SLOW.
- */
- uint8_t slow_flags[MMU_ACCESS_COUNT];
-
- /*
- * Allow target-specific additions to this structure.
- * This may be used to cache items from the guest cpu
- * page tables for later use by the implementation.
- */
- union {
- /*
- * Cache the attrs and shareability fields from the page table entry.
- *
- * For ARMMMUIdx_Stage2*, pte_attrs is the S2 descriptor bits [5:2].
- * Otherwise, pte_attrs is the same as the MAIR_EL1 8-bit format.
- * For shareability and guarded, as in the SH and GP fields
respectively
- * of the VMSAv8-64 PTEs.
- */
- struct {
- uint8_t pte_attrs;
- uint8_t shareability;
- bool guarded;
- } arm;
- } extra;
-} CPUTLBEntryFull;
-#endif /* CONFIG_SOFTMMU */
-
-#if defined(CONFIG_SOFTMMU) && defined(CONFIG_TCG)
-/*
- * Data elements that are per MMU mode, minus the bits accessed by
- * the TCG fast path.
- */
-typedef struct CPUTLBDesc {
- /*
- * Describe a region covering all of the large pages allocated
- * into the tlb. When any page within this region is flushed,
- * we must flush the entire tlb. The region is matched if
- * (addr & large_page_mask) == large_page_addr.
- */
- vaddr large_page_addr;
- vaddr large_page_mask;
- /* host time (in ns) at the beginning of the time window */
- int64_t window_begin_ns;
- /* maximum number of entries observed in the window */
- size_t window_max_entries;
- size_t n_used_entries;
- /* The next index to use in the tlb victim table. */
- size_t vindex;
- /* The tlb victim table, in two parts. */
- CPUTLBEntry vtable[CPU_VTLB_SIZE];
- CPUTLBEntryFull vfulltlb[CPU_VTLB_SIZE];
- CPUTLBEntryFull *fulltlb;
-} CPUTLBDesc;
-
-/*
- * Data elements that are shared between all MMU modes.
- */
-typedef struct CPUTLBCommon {
- /* Serialize updates to f.table and d.vtable, and others as noted. */
- QemuSpin lock;
- /*
- * Within dirty, for each bit N, modifications have been made to
- * mmu_idx N since the last time that mmu_idx was flushed.
- * Protected by tlb_c.lock.
- */
- uint16_t dirty;
- /*
- * Statistics. These are not lock protected, but are read and
- * written atomically. This allows the monitor to print a snapshot
- * of the stats without interfering with the cpu.
- */
- size_t full_flush_count;
- size_t part_flush_count;
- size_t elide_flush_count;
-} CPUTLBCommon;
-
-/*
- * The entire softmmu tlb, for all MMU modes.
- * The meaning of each of the MMU modes is defined in the target code.
- * Since this is placed within CPUNegativeOffsetState, the smallest
- * negative offsets are at the end of the struct.
- */
-
-typedef struct CPUTLB {
- CPUTLBCommon c;
- CPUTLBDesc d[NB_MMU_MODES];
- CPUTLBDescFast f[NB_MMU_MODES];
-} CPUTLB;
-
-#else
-
-typedef struct CPUTLB { } CPUTLB;
-
-#endif /* CONFIG_SOFTMMU && CONFIG_TCG */
-
/*
* This structure must be placed in ArchCPU immediately
* before CPUArchState, as a field named "neg".
diff --git a/include/exec/tlb-common.h b/include/exec/tlb-common.h
index d1203354b4..838a1f0d2a 100644
--- a/include/exec/tlb-common.h
+++ b/include/exec/tlb-common.h
@@ -19,6 +19,17 @@
#ifndef EXEC_TLB_COMMON_H
#define EXEC_TLB_COMMON_H 1
+#ifndef CONFIG_USER_ONLY
+#include "exec/hwaddr.h"
+#endif
+#include "exec/memattrs.h"
+
+/*
+ * Fix the number of mmu modes to 16, which is also the maximum
+ * supported by the softmmu tlb api.
+ */
+#define NB_MMU_MODES 16
+
typedef enum MMUAccessType {
MMU_DATA_LOAD = 0,
MMU_DATA_STORE = 1,
@@ -26,6 +37,13 @@ typedef enum MMUAccessType {
#define MMU_ACCESS_COUNT 3
} MMUAccessType;
+#if defined(CONFIG_SOFTMMU) && defined(CONFIG_TCG)
+/* use a fully associative victim tlb of 8 entries */
+#define CPU_VTLB_SIZE 8
+#endif
+
+#define CPU_TLB_ENTRY_BITS 5
+
/* Minimalized TLB entry for use by TCG fast path. */
typedef union CPUTLBEntry {
struct {
@@ -58,4 +76,134 @@ typedef struct CPUTLBDescFast {
CPUTLBEntry *table;
} CPUTLBDescFast QEMU_ALIGNED(2 * sizeof(void *));
+#if defined(CONFIG_SOFTMMU)
+/*
+ * The full TLB entry, which is not accessed by generated TCG code,
+ * so the layout is not as critical as that of CPUTLBEntry. This is
+ * also why we don't want to combine the two structs.
+ */
+typedef struct CPUTLBEntryFull {
+ /*
+ * @xlat_section contains:
+ * - in the lower TARGET_PAGE_BITS, a physical section number
+ * - with the lower TARGET_PAGE_BITS masked off, an offset which
+ * must be added to the virtual address to obtain:
+ * + the ram_addr_t of the target RAM (if the physical section
+ * number is PHYS_SECTION_NOTDIRTY or PHYS_SECTION_ROM)
+ * + the offset within the target MemoryRegion (otherwise)
+ */
+ hwaddr xlat_section;
+
+ /*
+ * @phys_addr contains the physical address in the address space
+ * given by cpu_asidx_from_attrs(cpu, @attrs).
+ */
+ hwaddr phys_addr;
+
+ /* @attrs contains the memory transaction attributes for the page. */
+ MemTxAttrs attrs;
+
+ /* @prot contains the complete protections for the page. */
+ uint8_t prot;
+
+ /* @lg_page_size contains the log2 of the page size. */
+ uint8_t lg_page_size;
+
+ /*
+ * Additional tlb flags for use by the slow path. If non-zero,
+ * the corresponding CPUTLBEntry comparator must have TLB_FORCE_SLOW.
+ */
+ uint8_t slow_flags[MMU_ACCESS_COUNT];
+
+ /*
+ * Allow target-specific additions to this structure.
+ * This may be used to cache items from the guest cpu
+ * page tables for later use by the implementation.
+ */
+ union {
+ /*
+ * Cache the attrs and shareability fields from the page table entry.
+ *
+ * For ARMMMUIdx_Stage2*, pte_attrs is the S2 descriptor bits [5:2].
+ * Otherwise, pte_attrs is the same as the MAIR_EL1 8-bit format.
+ * For shareability and guarded, as in the SH and GP fields
respectively
+ * of the VMSAv8-64 PTEs.
+ */
+ struct {
+ uint8_t pte_attrs;
+ uint8_t shareability;
+ bool guarded;
+ } arm;
+ } extra;
+} CPUTLBEntryFull;
+#endif /* CONFIG_SOFTMMU */
+
+#if defined(CONFIG_SOFTMMU) && defined(CONFIG_TCG)
+/*
+ * Data elements that are per MMU mode, minus the bits accessed by
+ * the TCG fast path.
+ */
+typedef struct CPUTLBDesc {
+ /*
+ * Describe a region covering all of the large pages allocated
+ * into the tlb. When any page within this region is flushed,
+ * we must flush the entire tlb. The region is matched if
+ * (addr & large_page_mask) == large_page_addr.
+ */
+ vaddr large_page_addr;
+ vaddr large_page_mask;
+ /* host time (in ns) at the beginning of the time window */
+ int64_t window_begin_ns;
+ /* maximum number of entries observed in the window */
+ size_t window_max_entries;
+ size_t n_used_entries;
+ /* The next index to use in the tlb victim table. */
+ size_t vindex;
+ /* The tlb victim table, in two parts. */
+ CPUTLBEntry vtable[CPU_VTLB_SIZE];
+ CPUTLBEntryFull vfulltlb[CPU_VTLB_SIZE];
+ CPUTLBEntryFull *fulltlb;
+} CPUTLBDesc;
+
+/*
+ * Data elements that are shared between all MMU modes.
+ */
+typedef struct CPUTLBCommon {
+ /* Serialize updates to f.table and d.vtable, and others as noted. */
+ QemuSpin lock;
+ /*
+ * Within dirty, for each bit N, modifications have been made to
+ * mmu_idx N since the last time that mmu_idx was flushed.
+ * Protected by tlb_c.lock.
+ */
+ uint16_t dirty;
+ /*
+ * Statistics. These are not lock protected, but are read and
+ * written atomically. This allows the monitor to print a snapshot
+ * of the stats without interfering with the cpu.
+ */
+ size_t full_flush_count;
+ size_t part_flush_count;
+ size_t elide_flush_count;
+} CPUTLBCommon;
+
+/*
+ * The entire softmmu tlb, for all MMU modes.
+ * The meaning of each of the MMU modes is defined in the target code.
+ * Since this is placed within CPUNegativeOffsetState, the smallest
+ * negative offsets are at the end of the struct.
+ */
+
+typedef struct CPUTLB {
+ CPUTLBCommon c;
+ CPUTLBDesc d[NB_MMU_MODES];
+ CPUTLBDescFast f[NB_MMU_MODES];
+} CPUTLB;
+
+#else
+
+typedef struct CPUTLB { } CPUTLB;
+
+#endif /* CONFIG_SOFTMMU && CONFIG_TCG */
+
#endif /* EXEC_TLB_COMMON_H */
--
2.41.0
