vasilito
dc68054305
- 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
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* This file is part of the Linux kernel.
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*
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* Copyright (c) 2011-2014, Intel Corporation
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* Authors: Fenghua Yu <fenghua.yu@intel.com>,
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* H. Peter Anvin <hpa@linux.intel.com>
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*/
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#ifndef ASM_X86_ARCHRANDOM_H
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#define ASM_X86_ARCHRANDOM_H
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#include <asm/processor.h>
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#include <asm/cpufeature.h>
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#define RDRAND_RETRY_LOOPS 10
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/* Unconditional execution of RDRAND and RDSEED */
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static inline bool __must_check rdrand_long(unsigned long *v)
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{
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bool ok;
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unsigned int retry = RDRAND_RETRY_LOOPS;
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do {
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asm volatile("rdrand %[out]"
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: "=@ccc" (ok), [out] "=r" (*v));
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if (ok)
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return true;
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} while (--retry);
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return false;
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}
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static inline bool __must_check rdseed_long(unsigned long *v)
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{
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bool ok;
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asm volatile("rdseed %[out]"
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: "=@ccc" (ok), [out] "=r" (*v));
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return ok;
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}
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/*
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* These are the generic interfaces; they must not be declared if the
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* stubs in <linux/random.h> are to be invoked.
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*/
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static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs)
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{
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return max_longs && static_cpu_has(X86_FEATURE_RDRAND) && rdrand_long(v) ? 1 : 0;
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}
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static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs)
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{
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return max_longs && static_cpu_has(X86_FEATURE_RDSEED) && rdseed_long(v) ? 1 : 0;
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}
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#ifndef CONFIG_UML
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void x86_init_rdrand(struct cpuinfo_x86 *c);
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#endif
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#endif /* ASM_X86_ARCHRANDOM_H */
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