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vancouver: VMX support, improved SVM portals

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Markus Partheymueller 2012-10-10 18:48:47 +02:00 committed by Norman Feske
parent 14307c778a
commit 1434d0948a
1 changed files with 188 additions and 28 deletions
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216
ports/src/vancouver/main.cc
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@ -1,11 +1,9 @@
/*
* \brief Vancouver main program for Genode
* \author Norman Feske
* \author Markus Partheymueller
* \date 2011-11-18
*
* This code is partially based on 'vancouver.cc' that comes with the NOVA
* userland.
*
* Important remark about debugging output:
*
* Most of the code within this file is called during virtualization event
@ -21,9 +19,16 @@
/*
* Copyright (C) 2011-2013 Genode Labs GmbH
* Copyright (C) 2012 Intel Corporation
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*
* The code is partially based on the Vancouver VMM, which is distributed
* under the terms of the GNU General Public License version 2.
*
* Modifications by Intel Corporation are contributed under the terms and
* conditions of the GNU General Public License version 2.
*/
/* Genode includes */
@ -186,12 +191,12 @@ class Vcpu_thread : Genode::Thread<STACK_SIZE> {
{
/* release pre-allocated selectors of Thread */
Genode::cap_selector_allocator()->
free(tid().exc_pt_sel,
free(tid().exc_pt_sel,
Nova::NUM_INITIAL_PT_LOG2);
/* allocate correct number of selectors */
tid().exc_pt_sel = Genode::cap_selector_allocator()->
alloc(VCPU_EXC_BASE_LOG2);
alloc(VCPU_EXC_BASE_LOG2);
/* tell generic thread code that this becomes a vCPU */
tid().is_vcpu = true;
@ -204,16 +209,17 @@ class Vcpu_thread : Genode::Thread<STACK_SIZE> {
revoke(Obj_crd(tid().exc_pt_sel, VCPU_EXC_BASE_LOG2));
Genode::cap_selector_allocator()->
free(tid().exc_pt_sel, VCPU_EXC_BASE_LOG2);
free(tid().exc_pt_sel, VCPU_EXC_BASE_LOG2);
/* allocate selectors for ~Thread */
tid().exc_pt_sel = Genode::cap_selector_allocator()->
alloc(NUM_INITIAL_PT_LOG2);
alloc(NUM_INITIAL_PT_LOG2);
}
Genode::addr_t exc_base() { return tid().exc_pt_sel; }
void start(Genode::addr_t sel_ec) {
void start(Genode::addr_t sel_ec)
{
this->Thread_base::start();
using namespace Genode;
@ -341,12 +347,12 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
* bsf is undefined for value == 0.
*/
Genode::addr_t bsf(Genode::addr_t value) {
return __builtin_ctz(value); }
return __builtin_ctz(value); }
bool max_map_crd(Nova::Mem_crd &crd, Genode::addr_t vmm_start,
Genode::addr_t vm_start, Genode::addr_t size,
Genode::addr_t vm_fault)
{
{
Nova::Mem_crd crd_save = crd;
retry:
@ -415,9 +421,9 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
+ mem_region.count);
Genode::addr_t vmm_memory_base =
reinterpret_cast<Genode::addr_t>(mem_region.ptr);
reinterpret_cast<Genode::addr_t>(mem_region.ptr);
Genode::addr_t vmm_memory_fault = vmm_memory_base +
(vm_fault_addr - (mem_region.start_page << PAGE_SIZE_LOG2));
(vm_fault_addr - (mem_region.start_page << PAGE_SIZE_LOG2));
Nova::Mem_crd crd(vmm_memory_fault >> PAGE_SIZE_LOG2, 0,
Nova::Rights(true, true, true));
@ -437,6 +443,8 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
Logging::printf("NPT mapping (base=0x%lx, order=%d, hotspot=0x%lx)\n",
crd.base(), crd.order(), hotspot);
utcb->mtd = 0;
/* EPT violation during IDT vectoring? */
if (utcb->inj_info & 0x80000000)
Logging::panic("EPT violation during IDT vectoring - not handled\n");
@ -463,8 +471,11 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
if (!_vcpu->executor.send(msg, true))
Logging::panic("nobody to execute %s at %x:%x\n", __func__, msg.cpu->cs.sel, msg.cpu->eip);
}
utcb->mtd = msg.mtr_out;
}
/* SVM portal functions */
void _svm_startup()
{
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_CHECK_IRQ);
@ -513,6 +524,13 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
_handle_vcpu(SKIP, CpuMessage::TYPE_CPUID);
}
void _svm_hlt()
{
Utcb *utcb = _utcb_of_myself();
utcb->inst_len = 1;
_vmx_hlt();
}
void _svm_msr()
{
_svm_invalid();
@ -523,6 +541,106 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_CHECK_IRQ);
}
/* VMX portal functions */
void _vmx_triple()
{
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_TRIPLE);
}
void _vmx_init()
{
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_INIT);
}
void _vmx_irqwin()
{
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_CHECK_IRQ);
}
void _vmx_hlt()
{
_handle_vcpu(SKIP, CpuMessage::TYPE_HLT);
}
void _vmx_rdtsc()
{
_handle_vcpu(SKIP, CpuMessage::TYPE_RDTSC);
}
void _vmx_vmcall()
{
Utcb *utcb = _utcb_of_myself();
utcb->eip += utcb->inst_len;
}
void _vmx_pause()
{
Utcb *utcb = _utcb_of_myself();
CpuMessage msg(CpuMessage::TYPE_SINGLE_STEP, static_cast<CpuState *>(utcb), utcb->mtd);
_skip_instruction(msg);
}
void _vmx_invalid()
{
Utcb *utcb = _utcb_of_myself();
utcb->efl |= 2;
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_SINGLE_STEP);
utcb->mtd |= MTD_RFLAGS;
}
void _vmx_startup()
{
Utcb *utcb = _utcb_of_myself();
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_HLT);
utcb->mtd |= MTD_CTRL;
utcb->ctrl[0] = 0;
utcb->ctrl[1] = 0;
}
void _vmx_recall()
{
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_CHECK_IRQ);
}
void _vmx_ioio()
{
Utcb *utcb = _utcb_of_myself();
unsigned order;
if (utcb->qual[0] & 0x10) {
Logging::panic("invalid gueststate intel - not implemented\n");
} else {
order = utcb->qual[0] & 7;
if (order > 2) order = 2;
}
_handle_io(utcb->qual[0] & 8, order, utcb->qual[0] >> 16);
}
void _vmx_mmio()
{
Utcb *utcb = _utcb_of_myself();
if (!_handle_map_memory(utcb->qual[0] & 0x38))
/* this is an access to MMIO */
_handle_vcpu(NO_SKIP, CpuMessage::TYPE_SINGLE_STEP);
}
void _vmx_cpuid()
{
_handle_vcpu(SKIP, CpuMessage::TYPE_CPUID);
}
void _vmx_msr_read()
{
_handle_vcpu(SKIP, CpuMessage::TYPE_RDMSR);
}
void _vmx_msr_write()
{
_handle_vcpu(SKIP, CpuMessage::TYPE_WRMSR);
}
/**
* Portal entry point entered on virtualization events
*
@ -579,7 +697,8 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
Guest_memory &guest_memory,
Motherboard &motherboard,
Genode::Cap_connection &cap_session,
bool has_svm)
bool has_svm,
bool has_vmx)
:
_vcpu(vcpu),
_vcpu_thread("vCPU thread"),
@ -606,7 +725,7 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
if (env()->cpu_session()->start(_thread_cap, 0, thread_sp))
throw Cpu_session::Thread_creation_failed();
/* Request exception portals for vCPU dispatcher */
/* Request exception portals for vCPU dispatcher */
for (unsigned i = 0; i < Nova::PT_SEL_PARENT; i++)
request_event_portal(pager_cap, _tid.exc_pt_sel, i);
@ -644,27 +763,67 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
Genode::addr_t exc_base =
_vcpu_thread.exc_base();
_register_handler<0x64, &This::_vmx_irqwin>
(exc_base, MTD_IRQ);
_register_handler<0x72, &This::_svm_cpuid>
(exc_base, mtd_cpuid);
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB | MTD_IRQ);
_register_handler<0x78, &This::_svm_hlt>
(exc_base, MTD_RIP_LEN | MTD_IRQ);
_register_handler<0x7b, &This::_svm_ioio>
(exc_base, mtd_all);
(exc_base, MTD_RIP_LEN | MTD_QUAL | MTD_GPR_ACDB | MTD_STATE);
_register_handler<0x7c, &This::_svm_msr>
(exc_base, mtd_all);
(exc_base, MTD_ALL);
_register_handler<0x7f, &This::_vmx_triple>
(exc_base, MTD_ALL);
_register_handler<0xfc, &This::_svm_npt>
(exc_base, mtd_all);
(exc_base, MTD_ALL);
_register_handler<0xfd, &This::_svm_invalid>
(exc_base, mtd_all);
(exc_base, MTD_ALL);
_register_handler<0xfe, &This::_svm_startup>
(exc_base, mtd_all);
(exc_base, MTD_ALL);
_register_handler<0xff, &This::_recall>
(exc_base, mtd_irq);
(exc_base, MTD_IRQ);
} else if (has_vmx) {
Genode::addr_t exc_base =
_vcpu_thread.exc_base();
_register_handler<2, &This::_vmx_triple>
(exc_base, MTD_ALL);
_register_handler<3, &This::_vmx_init>
(exc_base, MTD_ALL);
_register_handler<7, &This::_vmx_irqwin>
(exc_base, MTD_IRQ);
_register_handler<10, &This::_vmx_cpuid>
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB | MTD_STATE);
_register_handler<12, &This::_vmx_hlt>
(exc_base, MTD_RIP_LEN | MTD_IRQ);
_register_handler<16, &This::_vmx_rdtsc>
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB | MTD_TSC | MTD_STATE);
_register_handler<18, &This::_vmx_vmcall>
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB);
_register_handler<30, &This::_vmx_ioio>
(exc_base, MTD_RIP_LEN | MTD_QUAL | MTD_GPR_ACDB | MTD_STATE | MTD_RFLAGS);
_register_handler<31, &This::_vmx_msr_read>
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB | MTD_TSC | MTD_SYSENTER | MTD_STATE);
_register_handler<32, &This::_vmx_msr_write>
(exc_base, MTD_RIP_LEN | MTD_GPR_ACDB | MTD_TSC | MTD_SYSENTER | MTD_STATE);
_register_handler<33, &This::_vmx_invalid>
(exc_base, MTD_ALL);
_register_handler<40, &This::_vmx_pause>
(exc_base, MTD_RIP_LEN | MTD_STATE);
_register_handler<48, &This::_vmx_mmio>
(exc_base, MTD_ALL);
_register_handler<0xfe, &This::_vmx_startup>
(exc_base, MTD_IRQ);
_register_handler<0xff, &This::_vmx_recall>
(exc_base, MTD_IRQ | MTD_RIP_LEN | MTD_GPR_ACDB | MTD_GPR_BSD);
} else {
/*
* XXX: to be done, for now, we only support SVM
* We need Hardware Virtualization Features.
*/
Logging::panic("no SVM available, sorry");
Logging::panic("no SVM/VMX available, sorry");
}
/* let vCPU run */
@ -700,7 +859,8 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
* a unique identifier of the VCPU. I.e., it gets passed as
* arguments for 'MessageHostOp' operations.
*/
Nova::mword_t sel_sm_ec() {
Nova::mword_t sel_sm_ec()
{
return tid().exc_pt_sel + Nova::SM_SEL_EC;
}
@ -792,7 +952,7 @@ class Machine : public StaticReceiver<Machine>
Vcpu_dispatcher *vcpu_dispatcher =
new Vcpu_dispatcher(msg.vcpu, _guest_memory,
_motherboard, cap_session,
_hip->has_svm());
_hip->has_svm(), _hip->has_vmx());
msg.value = vcpu_dispatcher->sel_sm_ec();
return true;
@ -877,7 +1037,7 @@ class Machine : public StaticReceiver<Machine>
* Copy command line to guest RAM
*/
Genode::size_t const cmdline_len =
_boot_modules.cmdline(index, data_dst + cmdline_offset,
_boot_modules.cmdline(index, data_dst + cmdline_offset,
dst_len - cmdline_offset);
/*
@ -1152,12 +1312,12 @@ int main(int argc, char **argv)
(Genode::addr_t)guest_memory.backing_store_local_base() +
vm_size);
Genode::printf("[0x%08lx, 0x%08lx) - Genode thread context area\n",
Genode::printf("[0x%08lx, 0x%08lx) - Genode thread context area\n",
Genode::Native_config::context_area_virtual_base(),
Genode::Native_config::context_area_virtual_base() +
Genode::Native_config::context_area_virtual_size());
Genode::printf("[0x%08lx, 0x%08lx) - VMM program image\n",
Genode::printf("[0x%08lx, 0x%08lx) - VMM program image\n",
(Genode::addr_t)&_prog_img_beg,
(Genode::addr_t)&_prog_img_end);