[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 0/4] HVM Virtual S3 --- Revised and resent
Hi, all According to feedback those days, we revised and resend HVM virtual S3 patch. Changes includes: 1) We merged part of original S3 suspend and resume path, paused domain when do s3 suspend. Then unpause domain when s3 resume. 2) Add xm trigger <domid> s3suspend interface for triggering s3_resume operation for the suspended domain. 3) Add a flag for mark s3_suspended domain 4) make s3 suspended domain could be saved/restored. We tested the following four patches based on cs17655 on below environment: HVM guest FC8-32e X-window mode, vtd-enabled HVM guest FC8-32e X-window mode, no-vtd with PV drivers vif HVM guest FC6-32p test mode, vtd-enabled HVM guest FC6-32p test, no-vtd with PV drivers vif Also we test s3_suspend->save->restore->s3_resume operation seq for above four scenario. All works. No-windows HVM is tested since we have now vga drivers in qemu don't support. Thanks& Regards, Criping [PATCH 0/4] HVM Virtual S3 These set of patches are our prototype for HVM virtual ACPI S3 support: - patch 1/4: Xen interface for HVM S3 - patch 2/4: QEMU interface for HVM S3 - patch 3/4: rombios interface for HVM S3 - patch 4/4: xend interface for HVM S3 The main idea is: - emulate ACPI PM1A control resiger in QEMU to capture guest S3 request - when QEMU capture guest S3 request, it call hypercall to trap to Xen - HVM suspend operation now includes below steps: 1. reset all vcpus, timers 2. resume HVM by setting HVM vcpu EIP to 0xfff0, cs base to 0xf0000, and also set other related registers/msr to the correct value/attributes in realmode environment which will start from rombios post Entry code in realmode directly when resuming. 3. rombios post code will start s3 resume by jumping to wakeup vector set by guest OS. 4. pause domain - On resume, "xm trigger <domid> s3resume will call hypercall to trap to XEN How to use it: - apply this patch to changeset 17655:2ada81810ddb - create and boot HVM domain - In HVM guest, enter S3 state * for Linux, "echo mem >/sys/power/state" * for Windows, shutdown windows by Standby - to resume HVM domain, "xm trigger <domid> s3resume" Kevin/Ke/Liping _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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