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Commit dbd0906

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kxxttargos
authored andcommitted
deps: V8: cherry-pick 9ab40592f697
Original commit message: [riscv] Flush icache in both local and remote harts Fix the I-Cache flush flag according to the implementation of flush_icache_mm in Linux kernel. Change-Id: I6e6b1f56c377c2c0a629e170737bfac6c357ce8d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6080611 Commit-Queue: Yahan Lu (LuYahan) <yahan@iscas.ac.cn> Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> Cr-Commit-Position: refs/heads/main@{#97673} Refs: v8/v8@9ab4059 PR-URL: #56781 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Debadree Chatterjee <debadree333@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
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‎common.gypi‎

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+1-1Lines changed: 1 addition & 1 deletion
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@@ -37,7 +37,7 @@
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# Reset this number to 0 on major V8 upgrades.
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# Increment by one for each non-official patch applied to deps/v8.
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'v8_embedder_string': '-node.12',
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'v8_embedder_string': '-node.13',
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##### V8 defaults for Node.js #####
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‎deps/v8/src/codegen/riscv/cpu-riscv.cc‎

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+2-6Lines changed: 2 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -15,16 +15,12 @@ namespace internal {
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void CpuFeatures::FlushICache(void* start, size_t size) {
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#if !defined(USE_SIMULATOR)
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char* end = reinterpret_cast<char*>(start) + size;
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// The definition of this syscall is equal to
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// SYSCALL_DEFINE3(riscv_flush_icache, uintptr_t, start,
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// uintptr_t, end, uintptr_t, flags)
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// The flag here is set to be SYS_RISCV_FLUSH_ICACHE_LOCAL, which is
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// defined as 1 in the Linux kernel.
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// SYS_riscv_flush_icache is a symbolic constant used in user-space code to
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// identify the flush_icache system call, while __NR_riscv_flush_icache is the
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// corresponding system call number used in the kernel to dispatch the system
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// call.
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syscall(__NR_riscv_flush_icache, start, end, 1);
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// The flag set to zero will flush all cpu cores.
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syscall(__NR_riscv_flush_icache, start, end, 0);
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#endif // !USE_SIMULATOR.
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}
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