From: Borislav Petkov <bp@alien8.de>
To: Maran Wilson <maran.wilson@oracle.com>
Cc: x86@kernel.org, xen-devel@lists.xenproject.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
pbonzini@redhat.com, jgross@suse.com, boris.ostrovsky@oracle.com,
bp@suse.de, dave.hansen@linux.intel.com, davem@davemloft.net,
gregkh@linuxfoundation.org, hpa@zytor.com, jpoimboe@redhat.com,
kirill.shutemov@linux.intel.com, luto@kernel.org,
mchehab@kernel.org, mingo@redhat.com, rdunlap@infradead.org,
tglx@linutronix.de, thomas.lendacky@amd.com, hch@infradead.org,
roger.pau@citrix.com, rkrcmar@redhat.com
Subject: Re: [PATCH v9 0/7] KVM: x86: Allow Qemu/KVM to use PVH entry point
Date: Tue, 11 Dec 2018 14:18:25 +0100 [thread overview]
Message-ID: <20181211131825.GD27375@zn.tnic> (raw)
In-Reply-To: <1544468734-32763-1-git-send-email-maran.wilson@oracle.com>
On Mon, Dec 10, 2018 at 11:05:34AM -0800, Maran Wilson wrote:
> For certain applications it is desirable to rapidly boot a KVM virtual
> machine. In cases where legacy hardware and software support within the
> guest is not needed, Qemu should be able to boot directly into the
> uncompressed Linux kernel binary without the need to run firmware.
>
> There already exists an ABI to allow this for Xen PVH guests and the ABI
> is supported by Linux and FreeBSD:
>
> https://xenbits.xen.org/docs/unstable/misc/pvh.html
>
> This patch series would enable Qemu to use that same entry point for
> booting KVM guests.
How would I do that, practically?
Looking at those here:
> * Qemu and qboot RFC patches have been posted to show one example of how
> this functionality can be used. Some preliminary numbers are available
> in those cover letters showing the KVM guest boot time improvement.
> Qemu:
> http://lists.nongnu.org/archive/html/qemu-devel/2018-12/msg00957.html
> qboot:
> http://lists.nongnu.org/archive/html/qemu-devel/2018-12/msg00953.html
I might still need to do some dancing to get stuff going.
Thx.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2018-12-11 13:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 19:05 [PATCH v9 0/7] KVM: x86: Allow Qemu/KVM to use PVH entry point Maran Wilson
2018-12-10 19:07 ` [PATCH v9 1/7] xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and CONFIG_XEN_PVH Maran Wilson
2018-12-11 13:22 ` Borislav Petkov
2018-12-10 19:07 ` [PATCH v9 2/7] xen/pvh: Move PVH entry code out of Xen specific tree Maran Wilson
2018-12-10 19:08 ` [PATCH v9 3/7] xen/pvh: Create a new file for Xen specific PVH code Maran Wilson
2018-12-10 19:08 ` [PATCH v9 4/7] xen/pvh: Move Xen specific PVH VM initialization out of common file Maran Wilson
2018-12-10 19:08 ` [PATCH v9 5/7] xen/pvh: Move Xen code for getting mem map via hcall " Maran Wilson
2018-12-10 19:09 ` [PATCH v9 6/7] xen/pvh: Add memory map pointer to hvm_start_info struct Maran Wilson
2018-12-10 19:09 ` [PATCH v9 7/7] KVM: x86: Allow Qemu/KVM to use PVH entry point Maran Wilson
2018-12-11 13:18 ` Borislav Petkov [this message]
2018-12-11 19:29 ` [PATCH v9 0/7] " Maran Wilson
2018-12-12 20:39 ` Borislav Petkov
2018-12-12 21:56 ` Maran Wilson
2018-12-13 13:15 ` Paolo Bonzini
2018-12-14 23:13 ` Boris Ostrovsky
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