change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/kernel/bpf/core.c
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@@ -32,6 +32,7 @@
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 #include <linux/perf_event.h>
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 #include <linux/extable.h>
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 #include <linux/log2.h>
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+#include <linux/nospec.h>
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 #include <asm/barrier.h>
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 #include <asm/unaligned.h>
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@@ -827,7 +828,7 @@
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 {
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 	/* Only used as heuristic here to derive limit. */
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 	bpf_jit_limit_max = bpf_jit_alloc_exec_limit();
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-	bpf_jit_limit = min_t(u64, round_up(bpf_jit_limit_max >> 2,
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+	bpf_jit_limit = min_t(u64, round_up(bpf_jit_limit_max >> 1,
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 					    PAGE_SIZE), LONG_MAX);
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 	return 0;
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 }
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@@ -1646,9 +1647,7 @@
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 		 * reuse preexisting logic from Spectre v1 mitigation that
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 		 * happens to produce the required code on x86 for v4 as well.
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 		 */
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-#ifdef CONFIG_X86
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 		barrier_nospec();
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-#endif
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 		CONT;
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 #define LDST(SIZEOP, SIZE)						\
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 	STX_MEM_##SIZEOP:						\