lkml.org 
[lkml]   [2010]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 1/7] xen: add support for hvm_op
    Date
    From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

    Add support for hvm_op hypercall.

    Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
    Signed-off-by: Sheng Yang <sheng@linux.intel.com>
    ---
    arch/x86/include/asm/xen/hypercall.h | 6 ++
    include/xen/hvm.h | 23 +++++++
    include/xen/interface/hvm/hvm_op.h | 72 ++++++++++++++++++++++
    include/xen/interface/hvm/params.h | 111 ++++++++++++++++++++++++++++++++++
    4 files changed, 212 insertions(+), 0 deletions(-)
    create mode 100644 include/xen/hvm.h
    create mode 100644 include/xen/interface/hvm/hvm_op.h
    create mode 100644 include/xen/interface/hvm/params.h

    diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
    index 9c371e4..47c2ebb 100644
    --- a/arch/x86/include/asm/xen/hypercall.h
    +++ b/arch/x86/include/asm/xen/hypercall.h
    @@ -417,6 +417,12 @@ HYPERVISOR_nmi_op(unsigned long op, unsigned long arg)
    return _hypercall2(int, nmi_op, op, arg);
    }

    +static inline unsigned long __must_check
    +HYPERVISOR_hvm_op(int op, void *arg)
    +{
    + return _hypercall2(unsigned long, hvm_op, op, arg);
    +}
    +
    static inline void
    MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
    {
    diff --git a/include/xen/hvm.h b/include/xen/hvm.h
    new file mode 100644
    index 0000000..4ea8887
    --- /dev/null
    +++ b/include/xen/hvm.h
    @@ -0,0 +1,23 @@
    +/* Simple wrappers around HVM functions */
    +#ifndef XEN_HVM_H__
    +#define XEN_HVM_H__
    +
    +#include <xen/interface/hvm/params.h>
    +
    +static inline unsigned long hvm_get_parameter(int idx)
    +{
    + struct xen_hvm_param xhv;
    + int r;
    +
    + xhv.domid = DOMID_SELF;
    + xhv.index = idx;
    + r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
    + if (r < 0) {
    + printk(KERN_ERR "cannot get hvm parameter %d: %d.\n",
    + idx, r);
    + return 0;
    + }
    + return xhv.value;
    +}
    +
    +#endif /* XEN_HVM_H__ */
    diff --git a/include/xen/interface/hvm/hvm_op.h b/include/xen/interface/hvm/hvm_op.h
    new file mode 100644
    index 0000000..7c74ba4
    --- /dev/null
    +++ b/include/xen/interface/hvm/hvm_op.h
    @@ -0,0 +1,72 @@
    +/*
    + * Permission is hereby granted, free of charge, to any person obtaining a copy
    + * of this software and associated documentation files (the "Software"), to
    + * deal in the Software without restriction, including without limitation the
    + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
    + * sell copies of the Software, and to permit persons to whom the Software is
    + * furnished to do so, subject to the following conditions:
    + *
    + * The above copyright notice and this permission notice shall be included in
    + * all copies or substantial portions of the Software.
    + *
    + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    + * DEALINGS IN THE SOFTWARE.
    + */
    +
    +#ifndef __XEN_PUBLIC_HVM_HVM_OP_H__
    +#define __XEN_PUBLIC_HVM_HVM_OP_H__
    +
    +/* Get/set subcommands: extra argument == pointer to xen_hvm_param struct. */
    +#define HVMOP_set_param 0
    +#define HVMOP_get_param 1
    +struct xen_hvm_param {
    + domid_t domid; /* IN */
    + uint32_t index; /* IN */
    + uint64_t value; /* IN/OUT */
    +};
    +DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_param);
    +
    +/* Set the logical level of one of a domain's PCI INTx wires. */
    +#define HVMOP_set_pci_intx_level 2
    +struct xen_hvm_set_pci_intx_level {
    + /* Domain to be updated. */
    + domid_t domid;
    + /* PCI INTx identification in PCI topology (domain:bus:device:intx). */
    + uint8_t domain, bus, device, intx;
    + /* Assertion level (0 = unasserted, 1 = asserted). */
    + uint8_t level;
    +};
    +DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_set_pci_intx_level);
    +
    +/* Set the logical level of one of a domain's ISA IRQ wires. */
    +#define HVMOP_set_isa_irq_level 3
    +struct xen_hvm_set_isa_irq_level {
    + /* Domain to be updated. */
    + domid_t domid;
    + /* ISA device identification, by ISA IRQ (0-15). */
    + uint8_t isa_irq;
    + /* Assertion level (0 = unasserted, 1 = asserted). */
    + uint8_t level;
    +};
    +DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_set_isa_irq_level);
    +
    +#define HVMOP_set_pci_link_route 4
    +struct xen_hvm_set_pci_link_route {
    + /* Domain to be updated. */
    + domid_t domid;
    + /* PCI link identifier (0-3). */
    + uint8_t link;
    + /* ISA IRQ (1-15), or 0 (disable link). */
    + uint8_t isa_irq;
    +};
    +DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_set_pci_link_route);
    +
    +/* Flushes all VCPU TLBs: @arg must be NULL. */
    +#define HVMOP_flush_tlbs 5
    +
    +#endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
    diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h
    new file mode 100644
    index 0000000..15d828f
    --- /dev/null
    +++ b/include/xen/interface/hvm/params.h
    @@ -0,0 +1,111 @@
    +/*
    + * Permission is hereby granted, free of charge, to any person obtaining a copy
    + * of this software and associated documentation files (the "Software"), to
    + * deal in the Software without restriction, including without limitation the
    + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
    + * sell copies of the Software, and to permit persons to whom the Software is
    + * furnished to do so, subject to the following conditions:
    + *
    + * The above copyright notice and this permission notice shall be included in
    + * all copies or substantial portions of the Software.
    + *
    + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    + * DEALINGS IN THE SOFTWARE.
    + */
    +
    +#ifndef __XEN_PUBLIC_HVM_PARAMS_H__
    +#define __XEN_PUBLIC_HVM_PARAMS_H__
    +
    +#include "hvm_op.h"
    +
    +/*
    + * Parameter space for HVMOP_{set,get}_param.
    + */
    +
    +/*
    + * How should CPU0 event-channel notifications be delivered?
    + * val[63:56] == 0: val[55:0] is a delivery GSI (Global System Interrupt).
    + * val[63:56] == 1: val[55:0] is a delivery PCI INTx line, as follows:
    + * Domain = val[47:32], Bus = val[31:16],
    + * DevFn = val[15: 8], IntX = val[ 1: 0]
    + * If val == 0 then CPU0 event-channel notifications are not delivered.
    + */
    +#define HVM_PARAM_CALLBACK_IRQ 0
    +
    +/*
    + * These are not used by Xen. They are here for convenience of HVM-guest
    + * xenbus implementations.
    + */
    +#define HVM_PARAM_STORE_PFN 1
    +#define HVM_PARAM_STORE_EVTCHN 2
    +
    +#define HVM_PARAM_PAE_ENABLED 4
    +
    +#define HVM_PARAM_IOREQ_PFN 5
    +
    +#define HVM_PARAM_BUFIOREQ_PFN 6
    +
    +#ifdef __ia64__
    +
    +#define HVM_PARAM_NVRAM_FD 7
    +#define HVM_PARAM_VHPT_SIZE 8
    +#define HVM_PARAM_BUFPIOREQ_PFN 9
    +
    +#elif defined(__i386__) || defined(__x86_64__)
    +
    +/* Expose Viridian interfaces to this HVM guest? */
    +#define HVM_PARAM_VIRIDIAN 9
    +
    +#endif
    +
    +/*
    + * Set mode for virtual timers (currently x86 only):
    + * delay_for_missed_ticks (default):
    + * Do not advance a vcpu's time beyond the correct delivery time for
    + * interrupts that have been missed due to preemption. Deliver missed
    + * interrupts when the vcpu is rescheduled and advance the vcpu's virtual
    + * time stepwise for each one.
    + * no_delay_for_missed_ticks:
    + * As above, missed interrupts are delivered, but guest time always tracks
    + * wallclock (i.e., real) time while doing so.
    + * no_missed_ticks_pending:
    + * No missed interrupts are held pending. Instead, to ensure ticks are
    + * delivered at some non-zero rate, if we detect missed ticks then the
    + * internal tick alarm is not disabled if the VCPU is preempted during the
    + * next tick period.
    + * one_missed_tick_pending:
    + * Missed interrupts are collapsed together and delivered as one 'late tick'.
    + * Guest time always tracks wallclock (i.e., real) time.
    + */
    +#define HVM_PARAM_TIMER_MODE 10
    +#define HVMPTM_delay_for_missed_ticks 0
    +#define HVMPTM_no_delay_for_missed_ticks 1
    +#define HVMPTM_no_missed_ticks_pending 2
    +#define HVMPTM_one_missed_tick_pending 3
    +
    +/* Boolean: Enable virtual HPET (high-precision event timer)? (x86-only) */
    +#define HVM_PARAM_HPET_ENABLED 11
    +
    +/* Identity-map page directory used by Intel EPT when CR0.PG=0. */
    +#define HVM_PARAM_IDENT_PT 12
    +
    +/* Device Model domain, defaults to 0. */
    +#define HVM_PARAM_DM_DOMAIN 13
    +
    +/* ACPI S state: currently support S0 and S3 on x86. */
    +#define HVM_PARAM_ACPI_S_STATE 14
    +
    +/* TSS used on Intel when CR0.PE=0. */
    +#define HVM_PARAM_VM86_TSS 15
    +
    +/* Boolean: Enable aligning all periodic vpts to reduce interrupts */
    +#define HVM_PARAM_VPT_ALIGN 16
    +
    +#define HVM_NR_PARAMS 17
    +
    +#endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
    --
    1.5.4.5


    \
     
     \ /
      Last update: 2010-03-08 08:21    [W:0.033 / U:2.656 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site