From: Anchal Agarwal <anchalag@amazon.com> To: <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>, <hpa@zytor.com>, <x86@kernel.org>, <boris.ostrovsky@oracle.com>, <jgross@suse.com>, <linux-pm@vger.kernel.org>, <linux-mm@kvack.org>, <kamatam@amazon.com>, <sstabellini@kernel.org>, <konrad.wilk@oracle.com>, <roger.pau@citrix.com>, <axboe@kernel.dk>, <davem@davemloft.net>, <rjw@rjwysocki.net>, <len.brown@intel.com>, <pavel@ucw.cz>, <peterz@infradead.org>, <eduval@amazon.com>, <sblbir@amazon.com>, <anchalag@amazon.com>, <xen-devel@lists.xenproject.org>, <vkuznets@redhat.com>, <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <dwmw@amazon.co.uk>, <fllinden@amaozn.com>, <benh@kernel.crashing.org> Subject: [RFC PATCH v3 03/12] x86/xen: Introduce new function to map HYPERVISOR_shared_info on Resume Date: Fri, 14 Feb 2020 23:23:42 +0000 [thread overview] Message-ID: <8f87ac8101596b27b210697a507b47e3569a96d5.1581721799.git.anchalag@amazon.com> (raw) In-Reply-To: <cover.1581721799.git.anchalag@amazon.com> Introduce a small function which re-uses shared page's PA allocated during guest initialization time in reserve_shared_info() and not allocate new page during resume flow. It also does the mapping of shared_info_page by calling xen_hvm_init_shared_info() to use the function. Signed-off-by: Anchal Agarwal <anchalag@amazon.com> --- arch/x86/xen/enlighten_hvm.c | 7 +++++++ arch/x86/xen/xen-ops.h | 1 + 2 files changed, 8 insertions(+) diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index e138f7de52d2..75b1ec7a0fcd 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -27,6 +27,13 @@ static unsigned long shared_info_pfn; +void xen_hvm_map_shared_info(void) +{ + xen_hvm_init_shared_info(); + if (shared_info_pfn) + HYPERVISOR_shared_info = __va(PFN_PHYS(shared_info_pfn)); +} + void xen_hvm_init_shared_info(void) { struct xen_add_to_physmap xatp; diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 45a441c33d6d..d84c357994bd 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -56,6 +56,7 @@ void xen_enable_syscall(void); void xen_vcpu_restore(void); void xen_callback_vector(void); +void xen_hvm_map_shared_info(void); void xen_hvm_init_shared_info(void); void xen_unplug_emulated_devices(void); -- 2.24.1.AMZN
WARNING: multiple messages have this Message-ID (diff)
From: Anchal Agarwal <anchalag@amazon.com> To: <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>, <hpa@zytor.com>, <x86@kernel.org>, <boris.ostrovsky@oracle.com>, <jgross@suse.com>, <linux-pm@vger.kernel.org>, <linux-mm@kvack.org>, <kamatam@amazon.com>, <sstabellini@kernel.org>, <konrad.wilk@oracle.com>, <roger.pau@citrix.com>, <axboe@kernel.dk>, <davem@davemloft.net>, <rjw@rjwysocki.net>, <len.brown@intel.com>, <pavel@ucw.cz>, <peterz@infradead.org>, <eduval@amazon.com>, <sblbir@amazon.com>, <anchalag@amazon.com>, <xen-devel@lists.xenproject.org>, <vkuznets@redhat.com>, <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <dwmw@amazon.co.uk>, <fllinden@amaozn.com>, <benh@kernel.crashing.org> Subject: [Xen-devel] [RFC PATCH v3 03/12] x86/xen: Introduce new function to map HYPERVISOR_shared_info on Resume Date: Fri, 14 Feb 2020 23:23:42 +0000 [thread overview] Message-ID: <8f87ac8101596b27b210697a507b47e3569a96d5.1581721799.git.anchalag@amazon.com> (raw) In-Reply-To: <cover.1581721799.git.anchalag@amazon.com> Introduce a small function which re-uses shared page's PA allocated during guest initialization time in reserve_shared_info() and not allocate new page during resume flow. It also does the mapping of shared_info_page by calling xen_hvm_init_shared_info() to use the function. Signed-off-by: Anchal Agarwal <anchalag@amazon.com> --- arch/x86/xen/enlighten_hvm.c | 7 +++++++ arch/x86/xen/xen-ops.h | 1 + 2 files changed, 8 insertions(+) diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index e138f7de52d2..75b1ec7a0fcd 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -27,6 +27,13 @@ static unsigned long shared_info_pfn; +void xen_hvm_map_shared_info(void) +{ + xen_hvm_init_shared_info(); + if (shared_info_pfn) + HYPERVISOR_shared_info = __va(PFN_PHYS(shared_info_pfn)); +} + void xen_hvm_init_shared_info(void) { struct xen_add_to_physmap xatp; diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 45a441c33d6d..d84c357994bd 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -56,6 +56,7 @@ void xen_enable_syscall(void); void xen_vcpu_restore(void); void xen_callback_vector(void); +void xen_hvm_map_shared_info(void); void xen_hvm_init_shared_info(void); void xen_unplug_emulated_devices(void); -- 2.24.1.AMZN _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
next prev parent reply other threads:[~2020-02-14 23:24 UTC|newest] Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-14 23:21 [RFC RESEND PATCH v3 00/12] Enable PM hibernation on guest VMs Anchal Agarwal 2020-02-14 23:21 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:22 ` [RFC PATCH v3 01/12] xen/manage: keep track of the on-going suspend mode Anchal Agarwal 2020-02-14 23:22 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:23 ` [RFC PATCH v3 02/12] xenbus: add freeze/thaw/restore callbacks support Anchal Agarwal 2020-02-14 23:23 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:23 ` Anchal Agarwal [this message] 2020-02-14 23:23 ` [Xen-devel] [RFC PATCH v3 03/12] x86/xen: Introduce new function to map HYPERVISOR_shared_info on Resume Anchal Agarwal 2020-02-14 23:24 ` [RFC PATCH v3 04/12] x86/xen: add system core suspend and resume callbacks Anchal Agarwal 2020-02-14 23:24 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:24 ` [RFC PATCH v3 05/12] xen-netfront: add callbacks for PM suspend and hibernation support Anchal Agarwal 2020-02-14 23:24 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:25 ` [RFC PATCH v3 06/12] xen-blkfront: add callbacks for PM suspend and hibernation Anchal Agarwal 2020-02-14 23:25 ` [Xen-devel] " Anchal Agarwal 2020-02-17 10:05 ` Roger Pau Monné 2020-02-17 10:05 ` [Xen-devel] " Roger Pau Monné 2020-02-17 23:05 ` Anchal Agarwal 2020-02-17 23:05 ` [Xen-devel] " Anchal Agarwal 2020-02-18 9:16 ` Roger Pau Monné 2020-02-18 9:16 ` [Xen-devel] " Roger Pau Monné 2020-02-19 18:04 ` Anchal Agarwal 2020-02-19 18:04 ` [Xen-devel] " Anchal Agarwal 2020-02-20 8:39 ` Roger Pau Monné 2020-02-20 8:39 ` [Xen-devel] " Roger Pau Monné 2020-02-20 8:54 ` Durrant, Paul 2020-02-20 8:54 ` Durrant, Paul 2020-02-20 15:45 ` Roger Pau Monné 2020-02-20 15:45 ` Roger Pau Monné 2020-02-20 16:23 ` Durrant, Paul 2020-02-20 16:23 ` Durrant, Paul 2020-02-20 16:48 ` Roger Pau Monné 2020-02-20 16:48 ` Roger Pau Monné 2020-02-20 17:01 ` Durrant, Paul 2020-02-20 17:01 ` Durrant, Paul 2020-02-21 0:49 ` Anchal Agarwal 2020-02-21 0:49 ` Anchal Agarwal 2020-02-21 9:47 ` Roger Pau Monné 2020-02-21 9:47 ` Roger Pau Monné 2020-02-21 9:22 ` Roger Pau Monné 2020-02-21 9:22 ` Roger Pau Monné 2020-02-21 9:56 ` Durrant, Paul 2020-02-21 9:56 ` Durrant, Paul 2020-02-21 10:21 ` Roger Pau Monné 2020-02-21 10:21 ` Roger Pau Monné 2020-02-21 10:33 ` Durrant, Paul 2020-02-21 10:33 ` Durrant, Paul 2020-02-21 11:51 ` Roger Pau Monné 2020-02-21 11:51 ` Roger Pau Monné 2020-02-21 14:24 ` Roger Pau Monné 2020-02-21 14:24 ` [Xen-devel] " Roger Pau Monné 2020-03-06 18:40 ` Anchal Agarwal 2020-03-06 18:40 ` [Xen-devel] " Anchal Agarwal 2020-03-09 9:54 ` Roger Pau Monné 2020-03-09 9:54 ` [Xen-devel] " Roger Pau Monné [not found] ` <FA688A68-5372-4757-B075-A69A45671CB9@amazon.com> [not found] ` <20200312090435.GK24449@Air-de-Roger.citrite.net> 2020-03-13 17:21 ` Anchal Agarwal 2020-03-13 17:21 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:25 ` [RFC PATCH v3 07/12] genirq: Shutdown irq chips in suspend/resume during hibernation Anchal Agarwal 2020-02-14 23:25 ` [Xen-devel] " Anchal Agarwal 2020-03-06 23:03 ` Thomas Gleixner 2020-03-06 23:03 ` [Xen-devel] " Thomas Gleixner 2020-03-09 22:37 ` [EXTERNAL][RFC " Anchal Agarwal 2020-03-09 22:37 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:26 ` [RFC PATCH v3 08/12] xen/time: introduce xen_{save,restore}_steal_clock Anchal Agarwal 2020-02-14 23:26 ` [Xen-devel] [RFC PATCH v3 08/12] xen/time: introduce xen_{save, restore}_steal_clock Anchal Agarwal 2020-02-14 23:27 ` [RFC PATCH v3 09/12] x86/xen: save and restore steal clock Anchal Agarwal 2020-02-14 23:27 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:27 ` [RFC PATCH v3 10/12] xen: Introduce wrapper for save/restore sched clock offset Anchal Agarwal 2020-02-14 23:27 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:27 ` [RFC PATCH v3 11/12] xen: Update sched clock offset to avoid system instability in hibernation Anchal Agarwal 2020-02-14 23:27 ` [Xen-devel] " Anchal Agarwal 2020-02-14 23:28 ` [RFC PATCH v3 12/12] PM / hibernate: update the resume offset on SNAPSHOT_SET_SWAP_AREA Anchal Agarwal 2020-02-14 23:28 ` [Xen-devel] " Anchal Agarwal -- strict thread matches above, loose matches on Subject: below -- 2020-02-12 22:31 [RFC PATCH v3 03/12] x86/xen: Introduce new function to map HYPERVISOR_shared_info on Resume Anchal Agarwal
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