[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[XTF PATCH v1 2/6] x86: introduce cpu_relax()
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: dmukhin@xxxxxxxx
- Date: Wed, 11 Nov 2026 11:51:05 -0800
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 148.163.138.245) smtp.rcpttodomain=lists.xenproject.org smtp.mailfrom=ford.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=ford.com; dkim=pass (signature was verified) header.d=saarlouis.ford.com; dkim=pass (signature was verified) header.d=ford.com; arc=none (0)
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=HypWmXGSVJwaNtFzb83l9/dq/EobfE2tMNYmNPwO1yg=; b=UzCZqX3X66eBDASKhLpKHW8fwIOPlF1yl6DZQ+lEHni69FX5UiQseA60d1dEfCpL6TgrNFyHmzVmt99qYtKCwkUN+J3Sg4PAir8FiDlSoj8N+PhMJp984ezMazoonpo5zuQV2yh9J7F7TKFCeeMo6cu/kdOE5cPOCKL8gTHOc+IbGGDM1jJMVLXxMoGGF3W0Y6HhUo5MgoZciWGyfBPG5eQU5/pJiQ5+k5pAutX8Y1afR5ariqB/65B70r4BPuUmV5y9t7tSXo9qtUwOyPqro2KqnMC9C9fPjMffKvxXFfiOT7tK297WNaiLtvumox2ZOFP3sU4uL8SjcPzd/osMBw==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ATmapbIywWhfHyMuScmYXms/V9DuKbGZDw6f9QCgZubO5JwymICq7cQ8KoWDItbU3qbFqB/q+36UcltTuXw8VRWRNq7SX+WT5+pRfDUoc3Q8DkR8fEDBGVvkA0fc7Bhzt2ZYwkdOTK84x0gUT8fY2q21wr9SoymLdOp3B4j0ZGuqzIArsy2wMbYrsjC3m1Gh+VVuDiY6q9D0KEndukjct71XN9LcHJSXvuX5aJ/FuBKoQZ768RNxnQ8/n0hwBX5XanFxrAt5fyHng1RpWhKbQv/lSxa9VVON4wh17gTQ/w8Lx7qoVOf9tpSfmx+dWPJYFsBEx+Yt9lbafQSTwXes9A==
- Authentication-results: eu.smtp.expurgate.cloud; dkim=pass header.s=ppford header.d=ford.com header.i="@ford.com" header.h="Cc:Content-Transfer-Encoding:Content-Type:Date:From:In-Reply-To:Message-ID:MIME-Version:References:Subject:To"; dkim=pass header.s=selector2-azureford-onmicrosoft-com header.d=azureford.onmicrosoft.com header.i="@azureford.onmicrosoft.com" header.h="From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck"; dkim=pass header.s=ppserprodsaar header.d=saarlouis.ford.com header.i="@saarlouis.ford.com" header.h="Cc:Content-Transfer-Encoding:Date:From:In-Reply-To:Message-ID:MIME-Version:References:Subject:To"; dkim=pass header.s=ppfserpocford header.d=ford.com header.i="@ford.com" header.h="Cc:Content-Transfer-Encoding:Date:From:In-Reply-To:Message-ID:MIME-Version:References:Subject:To"
- Cc: andrew.cooper3@xxxxxxxxxx, anthony.perard@xxxxxxxxxx, jbeulich@xxxxxxxx, julien@xxxxxxx, michal.orzel@xxxxxxx, roger@xxxxxxxxxxxxxx, sstabellini@xxxxxxxxxx, dmukhin@xxxxxxx, Denis Mukhin <dmukhin@xxxxxxxx>
- Delivery-date: Wed, 11 Nov 2026 19:51:30 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Pser-m365-app: SER-APP
From: Denis Mukhin <dmukhin@xxxxxxxx>
Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
---
arch/x86/include/arch/processor.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/include/arch/processor.h
b/arch/x86/include/arch/processor.h
index 9cf2fe08669f..9db352f18c7c 100644
--- a/arch/x86/include/arch/processor.h
+++ b/arch/x86/include/arch/processor.h
@@ -190,6 +190,9 @@
#define X86_SEL_GDT 0
#define X86_SEL_LDT X86_SEL_TI
+/* Pause for busy-wait loops. */
+#define cpu_relax() asm volatile ( "pause" ::: "memory" )
+
#endif /* XTF_X86_PROCESSOR_H */
/*
--
2.56.0
|
