From: "Jan Beulich" <JBeulich@suse.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Campbell <ian.campbell@citrix.com>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v3 07/32] xen/x86: fix arch_set_info_guest for HVM guests
Date: Thu, 23 Jul 2015 09:32:52 -0600 [thread overview]
Message-ID: <55B125440200007800094BD2@prv-mh.provo.novell.com> (raw)
In-Reply-To: <55B103DD.4030901@citrix.com>
>>> On 23.07.15 at 17:10, <roger.pau@citrix.com> wrote:
> IMHO introducing a new structure that gets rid of all the PV-only
> fields seems like a good option:
>
> struct vcpu_hvm_context {
> #define _VGCF_online 5
> #define VGCF_online (1<<_VGCF_online)
> uint32_t flags; /* VGCF_* flags
> */
> struct cpu_hvm_user_regs user_regs; /* User-level CPU registers
> */
> /* NB. User pagetable on x86/64 is placed in ctrlreg[1]. */
> uint32_t ctrlreg[8]; /* CR0-CR7 (control registers)
> */
> uint32_t debugreg[8]; /* DB0-DB7 (debug registers)
> */
> };
>
> I'm also seriously considering getting rid of ctrlreg and debugreg.
> Since HVM VCPUs will always be started in 32bit flat mode, it doesn't
> make sense IMHO to have both the 32 and the 64 version of the
> registers, so cpu_hvm_user_regs is always going to be:
>
> struct cpu_hvm_user_regs {
> uint32_t ebx;
> uint32_t ecx;
> uint32_t edx;
> uint32_t esi;
> uint32_t edi;
> uint32_t ebp;
> uint32_t eax;
> uint32_t eip;
> uint32_t esp;
> uint32_t eflags;
> uint16_t cs;
> uint16_t ss;
> uint16_t es;
> uint16_t ds;
> uint16_t fs;
> uint16_t gs;
> };
>
> We could however do something similar to what's done in ARM and have
> a union of both the 32 and the 64bit registers in case we want to
> start the vCPU in 64bit mode sometime in the future.
What you gave above is suitable only for VCPUOP_initialise afaict.
Did you intend this to be the case?
Jan
next prev parent reply other threads:[~2015-07-23 15:32 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-03 11:34 [PATCH v3 00/32] Introduce HVM without dm and new boot ABI Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 01/32] libxc: split x86 HVM setup_guest into smaller logical functions Roger Pau Monne
2015-07-06 10:45 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 02/32] libxc: unify xc_dom_p2m_{host/guest} Roger Pau Monne
2015-07-06 10:49 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 03/32] libxc: introduce the notion of a container type Roger Pau Monne
2015-07-06 12:01 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 04/32] libxc: introduce a domain loader for HVM guest firmware Roger Pau Monne
2015-07-06 12:11 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 05/32] libxc: make arch_setup_meminit a xc_dom_arch hook Roger Pau Monne
2015-07-06 12:23 ` Andrew Cooper
2015-07-27 10:40 ` Roger Pau Monné
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 06/32] libxc: make arch_setup_boot{init/late} xc_dom_arch hooks Roger Pau Monne
2015-07-06 12:27 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 07/32] xen/x86: fix arch_set_info_guest for HVM guests Roger Pau Monne
2015-07-06 12:58 ` Andrew Cooper
2015-07-23 10:14 ` Roger Pau Monné
2015-07-10 18:39 ` Konrad Rzeszutek Wilk
2015-07-10 18:47 ` Konrad Rzeszutek Wilk
2015-07-23 10:17 ` Roger Pau Monné
2015-07-13 14:01 ` Jan Beulich
2015-07-23 10:25 ` Roger Pau Monné
2015-07-23 11:29 ` Jan Beulich
2015-07-23 11:41 ` Ian Campbell
2015-07-23 15:10 ` Roger Pau Monné
2015-07-23 15:32 ` Jan Beulich [this message]
2015-07-23 15:48 ` Roger Pau Monné
2015-07-23 15:58 ` Jan Beulich
2015-07-23 16:00 ` Ian Campbell
2015-07-23 16:15 ` Andrew Cooper
2015-07-23 16:19 ` Jan Beulich
2015-07-23 16:49 ` Andrew Cooper
2015-07-23 17:06 ` Roger Pau Monné
2015-07-23 16:56 ` Roger Pau Monné
2015-07-23 17:12 ` Andrew Cooper
2015-07-24 8:22 ` Jan Beulich
2015-07-24 9:59 ` Roger Pau Monné
2015-07-24 10:46 ` Jan Beulich
2015-07-24 12:11 ` Roger Pau Monné
2015-07-24 12:44 ` Jan Beulich
2015-07-24 15:26 ` Roger Pau Monné
2015-07-24 15:49 ` Jan Beulich
2015-07-24 16:54 ` Roger Pau Monné
2015-07-24 17:36 ` Konrad Rzeszutek Wilk
2015-07-27 11:55 ` Roger Pau Monné
2015-08-03 16:55 ` Andrew Cooper
2015-08-03 17:31 ` Roger Pau Monné
2015-08-04 18:08 ` Andrew Cooper
2015-08-05 9:53 ` Roger Pau Monné
2015-08-05 15:39 ` Andrew Cooper
2015-08-05 16:40 ` Roger Pau Monné
2015-08-05 16:46 ` Andrew Cooper
2015-08-05 17:11 ` Roger Pau Monné
2015-08-05 19:00 ` Andrew Cooper
2015-08-07 12:15 ` Tim Deegan
2015-08-11 7:26 ` Jan Beulich
2015-07-24 11:11 ` Andrew Cooper
2015-07-24 11:28 ` Ian Campbell
2015-07-24 11:49 ` Jan Beulich
2015-07-24 11:46 ` Jan Beulich
2015-07-24 11:49 ` Roger Pau Monné
2015-07-24 12:41 ` Jan Beulich
2015-07-24 15:28 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 08/32] libxc: introduce a xc_dom_arch for hvm-3.0-x86_32 guests Roger Pau Monne
2015-07-06 13:40 ` Andrew Cooper
2015-07-03 11:34 ` [PATCH v3 09/32] libxl: switch HVM domain building to use xc_dom_* helpers Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-28 14:26 ` Roger Pau Monné
2015-07-28 14:29 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 10/32] libxc: remove dead HVM building code Roger Pau Monne
2015-07-06 13:46 ` Andrew Cooper
2015-07-23 10:27 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 11/32] xen/x86: add bitmap of enabled emulated devices Roger Pau Monne
2015-07-06 14:10 ` Andrew Cooper
2015-07-07 7:26 ` Jan Beulich
2015-07-23 10:29 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 12/32] xen/x86: allow disabling the emulated local apic Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 13/32] xen/x86: allow disabling the emulated HPET Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 14/32] xen/x86: allow disabling the pmtimer Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 15/32] xen/x86: allow disabling the emulated RTC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 16/32] xen/x86: allow disabling the emulated IO APIC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 17/32] xen/x86: allow disabling the emulated PIC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 18/32] xen/x86: allow disabling the emulated pmu Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 19/32] xen/x86: allow disabling the emulated VGA Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 20/32] xen/x86: allow disabling the emulated IOMMU Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 21/32] xen/x86: allow disabling all emulated devices inside of Xen Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 22/32] elfnotes: intorduce a new PHYS_ENTRY elfnote Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 23/32] libxc: allow creating domains without emulated devices Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:35 ` [PATCH v3 24/32] xen: allow HVM guests to use XENMEM_memory_map Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 25/32] xen/x86: allow HVM guests to use hypercalls to bring up vCPUs Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 26/32] xenconsole: try to attach to PV console if HVM fails Roger Pau Monne
2015-07-14 13:46 ` Stefano Stabellini
2015-07-23 10:30 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 27/32] libxc: change the position of the special pages Roger Pau Monne
2015-07-03 15:36 ` Roger Pau Monné
2015-07-10 19:06 ` Konrad Rzeszutek Wilk
2015-07-23 10:42 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 28/32] libxc/xen: introduce HVM_PARAM_CMDLINE_PFN Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 29/32] libxc/xen: introduce HVM_PARAM_FIRST_FREE_PFN Roger Pau Monne
2015-07-10 19:05 ` Konrad Rzeszutek Wilk
2015-07-23 10:46 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 30/32] libxc/xen: introduce HVM_PARAM_MODLIST_PFN Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 31/32] libxc: switch xc_dom_elfloader to be used with HVMlite domains Roger Pau Monne
2015-07-10 19:07 ` Konrad Rzeszutek Wilk
2015-07-23 10:48 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 32/32] libxl: allow the creation of HVM domains without a device model Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-29 14:43 ` Roger Pau Monné
2015-07-29 14:50 ` Wei Liu
2015-07-29 14:58 ` Andrew Cooper
2015-07-03 16:19 ` [PATCH v3 00/32] Introduce HVM without dm and new boot ABI David Vrabel
2015-07-03 16:36 ` Roger Pau Monné
2015-07-10 17:44 ` Konrad Rzeszutek Wilk
2015-07-10 18:01 ` Konrad Rzeszutek Wilk
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