Re: [RFC PATCH v11 for 4.15 01/24] Restartable sequences system call
From: Mathieu Desnoyers <hidden>
Date: 2017-11-16 16:26:38
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----- On Nov 16, 2017, at 11:18 AM, Peter Zijlstra peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org wrote:
On Tue, Nov 14, 2017 at 03:03:51PM -0500, Mathieu Desnoyers wrote:quoted
@@ -977,6 +978,13 @@ struct task_struct { unsigned long numa_pages_migrated; #endif /* CONFIG_NUMA_BALANCING */ +#ifdef CONFIG_RSEQ + struct rseq __user *rseq; + u32 rseq_len; + u32 rseq_sig; + bool rseq_preempt, rseq_signal, rseq_migrate;No bool please. Use something that has a defined size in ILP32/LP64. _Bool makes it absolutely impossible to speculate on structure layout across architectures.
I should as well make all those a bitmask within a "u32 rseq_event_mask" then, sounds fair ? Thanks, Mathieu
quoted
+#endif + struct tlbflush_unmap_batch tlb_ubc; struct rcu_head rcu;
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com