From nobody Tue Feb 10 00:22:49 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org ARC-Seal: i=1; a=rsa-sha256; t=1597746680; cv=none; d=zohomail.com; s=zohoarc; b=oEU5a+GBr2w5B6Wo34d9k9AQ91nvUphYzHyISZ4nbO6IxHW9LaPq4FC654CJm/5Zwvfr14j5K/aOw17LuhlUjK091aSlXL5Kw9Ac3HV+NzgguD4dd+oSM1ICdkt5YoMx+okLms0Go/0/SYRzBENWbBQZuJeDxZ5St8vtIvPQJ3I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1597746680; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=0B+/exvkZXk9UaGSfy4aEbkmijHI3UBAG2GUZIo9jRQ=; b=Z3tjTlMlxIiztBsBXFrtmdo972B4MNBHU87/PuplPITcIrHqjnCztPjbfut+w3Ejw9piFaXEJ55UUjSdx759sGy5vOcE/ImA3+Wse+R6ai29Qo6mby4NzEXhaz+6obLFyl4aF0fvtnx7FY6kO920Ufr68tR/hp6GsYkE7Mlf8kQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1597746680691525.7826633968134; Tue, 18 Aug 2020 03:31:20 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k7ytR-0006HD-9G; Tue, 18 Aug 2020 10:31:01 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k7ytP-0005zo-NE for xen-devel@lists.xenproject.org; Tue, 18 Aug 2020 10:30:59 +0000 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id c59afaba-b84f-4ebd-a365-e9f923ab4cc3; Tue, 18 Aug 2020 10:30:46 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k7ytB-00014r-WC; Tue, 18 Aug 2020 10:30:45 +0000 Received: from host31-48-92-96.range31-48.btcentralplus.com ([31.48.92.96] helo=u2f063a87eabd5f.home) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k7ytB-0003Rw-OT; Tue, 18 Aug 2020 10:30:45 +0000 X-Inumbo-ID: c59afaba-b84f-4ebd-a365-e9f923ab4cc3 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=0B+/exvkZXk9UaGSfy4aEbkmijHI3UBAG2GUZIo9jRQ=; b=FuA1OU59lP4vZMREqb9t/otfTd SE2qr5h8lFkvFnE1sEtUw2zG1+wN7yg3u4NPaDYsC7Zj+Q7bp7B9MVN/DrwKKl4oNANdFw27AEaDk VMHr0kyZauOQ1ZnBz3E6wHidQyI+o1/hlZikXrOa/WnZZgP3nK9obQo8MObxm/YNCTrM=; From: Paul Durrant To: xen-devel@lists.xenproject.org Cc: Paul Durrant , Ian Jackson , Wei Liu , Andrew Cooper , George Dunlap , Jan Beulich , Julien Grall , Stefano Stabellini , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v7 8/9] x86/time: add a domain context record for tsc_info... Date: Tue, 18 Aug 2020 11:30:31 +0100 Message-Id: <20200818103032.3050-9-paul@xen.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200818103032.3050-1-paul@xen.org> References: <20200818103032.3050-1-paul@xen.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: pass (identity @xen.org) From: Paul Durrant ... and update xen-domctx to dump some information describing the record. NOTE: Whilst the record definition is x86 specific, it is visible directly in the common header as context record numbers should be unique across all architectures. Signed-off-by: Paul Durrant Reviewed-by: Jan Beulich --- Cc: Ian Jackson Cc: Wei Liu Cc: Andrew Cooper Cc: George Dunlap Cc: Jan Beulich Cc: Julien Grall Cc: Stefano Stabellini Cc: "Roger Pau Monn=C3=A9" v7: - New in v7 --- tools/misc/xen-domctx.c | 12 ++++++++++++ xen/arch/x86/time.c | 34 +++++++++++++++++++++++++++++++++- xen/include/asm-x86/time.h | 5 +++-- xen/include/public/save.h | 13 ++++++++++++- 4 files changed, 60 insertions(+), 4 deletions(-) diff --git a/tools/misc/xen-domctx.c b/tools/misc/xen-domctx.c index 6ead7ea89d..e09d75cf68 100644 --- a/tools/misc/xen-domctx.c +++ b/tools/misc/xen-domctx.c @@ -59,9 +59,20 @@ static void dump_header(void) =20 printf(" HEADER: magic %#x, version %u\n", h->magic, h->version); +} + +static void dump_tsc_info(void) +{ + DOMAIN_SAVE_TYPE(TSC_INFO) *t; =20 + GET_PTR(t); + + printf(" TSC_INFO: mode: %u incarnation: %u\n" + " khz %u elapsed_nsec: %"PRIu64"\n", + t->mode, t->incarnation, t->khz, t->elapsed_nsec); } =20 + static void print_binary(const char *prefix, const void *val, size_t size, const char *suffix) { @@ -251,6 +262,7 @@ int main(int argc, char **argv) { case DOMAIN_SAVE_CODE(HEADER): dump_header(); break; case DOMAIN_SAVE_CODE(SHARED_INFO): dump_shared_info(); break; + case DOMAIN_SAVE_CODE(TSC_INFO): dump_tsc_info(); break; case DOMAIN_SAVE_CODE(END): dump_end(); break; default: printf("Unknown type %u: skipping\n", desc->typecode); diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c index 505e54ebd7..05f65fbf12 100644 --- a/xen/arch/x86/time.c +++ b/xen/arch/x86/time.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -2334,7 +2335,7 @@ int host_tsc_is_safe(void) * called to collect tsc-related data only for save file or live * migrate; called after last rdtsc is done on this incarnation */ -void tsc_get_info(struct domain *d, uint32_t *tsc_mode, +void tsc_get_info(const struct domain *d, uint32_t *tsc_mode, uint64_t *elapsed_nsec, uint32_t *gtsc_khz, uint32_t *incarnation) { @@ -2453,6 +2454,37 @@ int tsc_set_info(struct domain *d, return 0; } =20 +static int save_tsc_info(const struct domain *d, struct domain_context *c, + bool dry_run) +{ + struct domain_tsc_info_context ctxt; + + if ( !dry_run ) + tsc_get_info(d, &ctxt.mode, &ctxt.elapsed_nsec, &ctxt.khz, + &ctxt.incarnation); + + return DOMAIN_SAVE_ENTRY(TSC_INFO, c, 0, &ctxt, sizeof(ctxt)); +} + +static int load_tsc_info(struct domain *d, struct domain_context *c) +{ + struct domain_tsc_info_context ctxt; + unsigned int i; + int rc; + + rc =3D DOMAIN_LOAD_ENTRY(TSC_INFO, c, &i, &ctxt, sizeof(ctxt)); + if ( rc ) + return rc; + + if ( i ) /* expect only a single instance */ + return -ENXIO; + + return tsc_set_info(d, ctxt.mode, ctxt.elapsed_nsec, ctxt.khz, + ctxt.incarnation); +} + +DOMAIN_REGISTER_SAVE_LOAD(TSC_INFO, save_tsc_info, load_tsc_info); + /* vtsc may incur measurable performance degradation, diagnose with this */ static void dump_softtsc(unsigned char key) { diff --git a/xen/include/asm-x86/time.h b/xen/include/asm-x86/time.h index f347311cc4..7f2ce6226a 100644 --- a/xen/include/asm-x86/time.h +++ b/xen/include/asm-x86/time.h @@ -59,8 +59,9 @@ u64 gtsc_to_gtime(struct domain *d, u64 tsc); int tsc_set_info(struct domain *d, uint32_t tsc_mode, uint64_t elapsed_nse= c, uint32_t gtsc_khz, uint32_t incarnation); =20 -void tsc_get_info(struct domain *d, uint32_t *tsc_mode, uint64_t *elapsed_= nsec, - uint32_t *gtsc_khz, uint32_t *incarnation); +void tsc_get_info(const struct domain *d, uint32_t *tsc_mode, + uint64_t *elapsed_nsec, uint32_t *gtsc_khz, + uint32_t *incarnation); =20 =20 void force_update_vcpu_system_time(struct vcpu *v); diff --git a/xen/include/public/save.h b/xen/include/public/save.h index 0e855a4b97..aeb17298eb 100644 --- a/xen/include/public/save.h +++ b/xen/include/public/save.h @@ -93,7 +93,18 @@ struct domain_shared_info_context { =20 DECLARE_DOMAIN_SAVE_TYPE(SHARED_INFO, 2, struct domain_shared_info_context= ); =20 -#define DOMAIN_SAVE_CODE_MAX 2 +#if defined(__i386__) || defined(__x86_64__) +struct domain_tsc_info_context { + uint32_t mode; + uint32_t incarnation; + uint64_t elapsed_nsec; + uint32_t khz; +}; + +DECLARE_DOMAIN_SAVE_TYPE(TSC_INFO, 3, struct domain_tsc_info_context); +#endif + +#define DOMAIN_SAVE_CODE_MAX 3 =20 #endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */ =20 --=20 2.20.1