mirror of
https://github.com/hanzoai/visor.git
synced 2026-09-24 17:04:14 +00:00
Tao Lin
28cf7f346d
This adds support for running gVisor on ARM64 systems with 64K page size (e.g., NVIDIA Grace CPU). Key changes: 1. hostarch: Split page size constants into separate files selected by the `pagesize_64k` build tag. 64K pages use PageShift=16 and HugePageShift=29 (512MB huge pages). Remove uint16 from the bytecount interface since 64K (2^16) cannot be represented by uint16. 2. ring0: Move page table layout constants to page-size-specific files. 64K pages use larger page table entries (64K per table) and skip the PUD level. 3. ring0/pagetables: Add 3-level page table walker for 64K pages (PGD→PMD→PTE, no PUD). Each level indexes 8192 entries (13 bits) with 512MB sect pages at the PMD level. 4. sentry/arch: Fix mmap layout constants that overflowed the 48-bit address space with 64K pages. Use fixed values for maxMmapRand64 (1<<45 = 32TB) and minMmapRand64 (1<<30 = 1GB), and compute maxStackRand64 using hostarch.PageShift. 5. Bazel build system: Add `--define=pagesize=64k` support that propagates the `pagesize_64k` Go build tag to all binaries and tests. Build with `bazel build --define=pagesize=64k //runsc:runsc` to enable. Note: Currently only the ptrace platform is supported for 64K pages. KVM and systrap platforms require additional work. Updates #8196
42 lines
898 B
Python
42 lines
898 B
Python
load("//tools:defs.bzl", "go_library")
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package(
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default_applicable_licenses = ["//:license"],
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licenses = ["notice"],
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)
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go_library(
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name = "ring0",
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srcs = [
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"aarch64.go",
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"aarch64_4k.go",
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"aarch64_64k.go",
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"defs.go",
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"defs_amd64.go",
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"defs_arm64.go",
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"entry_amd64.go",
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"entry_amd64.s",
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"entry_arm64.go",
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"entry_arm64.s",
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"kernel.go",
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"kernel_amd64.go",
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"kernel_arm64.go",
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"kernel_unsafe.go",
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"lib_amd64.go",
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"lib_amd64.s",
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"lib_arm64.go",
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"lib_arm64.s",
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"ring0.go",
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"x86.go",
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],
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visibility = ["//pkg/sentry:internal"],
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deps = [
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"//pkg/abi/linux",
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"//pkg/cpuid",
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"//pkg/hostarch",
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"//pkg/ring0/pagetables",
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"//pkg/sentry/arch",
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"//pkg/sentry/arch/fpu",
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],
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)
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