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sel4: let seoul-kernelbuild.run succeed

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Issue #3111
This commit is contained in:
Alexander Boettcher 2019-05-14 16:10:13 +02:00 committed by Christian Helmuth
parent c6ec2c1dd7
commit faee97dd1e
7 changed files with 190 additions and 109 deletions
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21
repos/base-sel4/patches/intel_vmx_disable_vpid.patch Normal file
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@ -0,0 +1,21 @@
--- src/kernel/sel4/src/arch/x86/object/vcpu.c
+++ src/kernel/sel4/src/arch/x86/object/vcpu.c
@@ -285,13 +288,13 @@ init_vtx_fixed_values(bool_t useTrueMsrs)
cr4_low = x86_rdmsr_low(IA32_VMX_CR4_FIXED1_MSR);
/* Check for VPID support */
- if (!(secondary_control_low & BIT(5))) {
+// if (!(secondary_control_low & BIT(5))) {
vmx_feature_vpid = 0;
printf("vt-x: VPIDs are not supported. Expect performance degredation\n");
- } else {
- vmx_feature_vpid = 1;
- secondary_control_mask |= BIT(5);
- }
+// } else {
+// vmx_feature_vpid = 1;
+// secondary_control_mask |= BIT(5);
+// }
/* Check for load perf global control */
if (!(exit_control_low & BIT(12))) {

87
repos/base-sel4/patches/intel_vmx_full_state.patch Normal file
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@ -0,0 +1,87 @@
--- src/kernel/sel4/src/arch/x86/object/vcpu.c
+++ src/kernel/sel4/src/arch/x86/object/vcpu.c
@@ -88,6 +88,9 @@ static bool_t vmx_feature_ack_on_exit;
static vcpu_t *x86KSVPIDTable[VPID_LAST + 1];
static vpid_t x86KSNextVPID = VPID_FIRST;
+static void
+setMRs_vmexit(uint32_t reason, word_t qualification, tcb_t *tcb);
+
static inline bool_t
vmxon(paddr_t vmxon_region)
{
@@ -967,10 +987,8 @@ vcpu_update_state_sysvmenter(vcpu_t *vcpu)
void
vcpu_sysvmenter_reply_to_user(tcb_t *tcb)
{
- word_t *buffer;
vcpu_t *vcpu;
- buffer = lookupIPCBuffer(true, tcb);
vcpu = tcb->tcbArch.tcbVCPU;
assert(vcpu);
@@ -979,11 +997,9 @@ vcpu_sysvmenter_reply_to_user(tcb_t *tcb)
switchVCPU(vcpu);
}
- setMR(tcb, buffer, SEL4_VMENTER_CALL_EIP_MR, vmread(VMX_GUEST_RIP));
- setMR(tcb, buffer, SEL4_VMENTER_CALL_CONTROL_PPC_MR, vmread(VMX_CONTROL_PRIMARY_PROCESSOR_CONTROLS));
+ setMRs_vmexit(/* unused */ -1, /* unused */ -1, tcb);
- setMR(tcb, buffer, SEL4_VMENTER_CALL_CONTROL_ENTRY_MR, vmread(VMX_CONTROL_ENTRY_INTERRUPTION_INFO));
- setRegister(tcb, msgInfoRegister, 0);
+ setRegister(tcb, msgInfoRegister, 0 /* notification that this is no VM exit */);
}
exception_t
@@ -1113,27 +1141,27 @@ vtx_init(void)
}
static void
-setMRs_vmexit(uint32_t reason, word_t qualification)
+setMRs_vmexit(uint32_t reason, word_t qualification, tcb_t *tcb)
{
word_t *buffer;
int i;
- buffer = lookupIPCBuffer(true, NODE_STATE(ksCurThread));
+ buffer = lookupIPCBuffer(true, tcb);
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_CALL_EIP_MR, vmread(VMX_GUEST_RIP));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_CALL_CONTROL_PPC_MR, vmread(VMX_CONTROL_PRIMARY_PROCESSOR_CONTROLS));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_CALL_CONTROL_ENTRY_MR, vmread(VMX_CONTROL_ENTRY_INTERRUPTION_INFO));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_REASON_MR, reason);
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_QUALIFICATION_MR, qualification);
+ setMR(tcb, buffer, SEL4_VMENTER_CALL_EIP_MR, vmread(VMX_GUEST_RIP));
+ setMR(tcb, buffer, SEL4_VMENTER_CALL_CONTROL_PPC_MR, vmread(VMX_CONTROL_PRIMARY_PROCESSOR_CONTROLS));
+ setMR(tcb, buffer, SEL4_VMENTER_CALL_CONTROL_ENTRY_MR, vmread(VMX_CONTROL_ENTRY_INTERRUPTION_INFO));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_REASON_MR, reason);
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_QUALIFICATION_MR, qualification);
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_INSTRUCTION_LEN_MR, vmread(VMX_DATA_EXIT_INSTRUCTION_LENGTH));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_GUEST_PHYSICAL_MR, vmread(VMX_DATA_GUEST_PHYSICAL));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_RFLAGS_MR, vmread(VMX_GUEST_RFLAGS));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_GUEST_INT_MR, vmread(VMX_GUEST_INTERRUPTABILITY));
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_CR3_MR, vmread(VMX_GUEST_CR3));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_INSTRUCTION_LEN_MR, vmread(VMX_DATA_EXIT_INSTRUCTION_LENGTH));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_GUEST_PHYSICAL_MR, vmread(VMX_DATA_GUEST_PHYSICAL));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_RFLAGS_MR, vmread(VMX_GUEST_RFLAGS));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_GUEST_INT_MR, vmread(VMX_GUEST_INTERRUPTABILITY));
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_CR3_MR, vmread(VMX_GUEST_CR3));
for (i = 0; i < n_vcpu_gp_register; i++) {
- setMR(NODE_STATE(ksCurThread), buffer, SEL4_VMENTER_FAULT_EAX + i, NODE_STATE(ksCurThread)->tcbArch.tcbVCPU->gp_registers[i]);
+ setMR(tcb, buffer, SEL4_VMENTER_FAULT_EAX + i, tcb->tcbArch.tcbVCPU->gp_registers[i]);
}
}
@@ -1143,7 +1171,7 @@ handleVmxFault(uint32_t reason, word_t qualification)
/* Indicate that we are returning the from VMEnter with a fault */
setRegister(NODE_STATE(ksCurThread), msgInfoRegister, SEL4_VMENTER_RESULT_FAULT);
- setMRs_vmexit(reason, qualification);
+ setMRs_vmexit(reason, qualification, NODE_STATE(ksCurThread));
/* Set the thread back to running */
setThreadState(NODE_STATE(ksCurThread), ThreadState_Running);

2
repos/base-sel4/ports/sel4.hash
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@ -1 +1 @@
34b8f0e01692d1d2ba2f02c98bafe321fc09de22
7935487f91a31c0cd8aaf09278f6312af56bb935

4
repos/base-sel4/src/core/include/vm_space.h
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@ -134,6 +134,8 @@ class Genode::Vm_space
*/
using Selector_allocator = Bit_allocator<1UL << NUM_VM_SEL_LOG2>;
class Alloc_page_table_failed : Exception { };
private:
Selector_allocator _sel_alloc { };
@ -247,8 +249,6 @@ class Genode::Vm_space
long _invalidate_page(Genode::Cap_sel const &, seL4_Word const,
seL4_Word const);
class Alloc_page_table_failed : Exception { };
/**
* Allocate and install page structures for the protection domain.
*

49
repos/base-sel4/src/core/spec/x86/vm_session_component.cc
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@ -251,22 +251,24 @@ void Vm_session_component::_attach_vm_memory(Dataspace_component &dsc,
while (page.valid()) {
enum { NO_FLUSH = false, FLUSH = true };
try {
_vm_space.alloc_guest_page_tables(page.hotspot, 1 << page.log2_order);
_vm_space.map_guest(page.addr, page.hotspot,
(1 << page.log2_order) / 4096,
dsc.cacheability(),
dsc.writable() && attribute.writeable,
attribute.executable, NO_FLUSH);
} catch (Page_table_registry::Mapping_cache_full full) {
if (full.reason == Page_table_registry::Mapping_cache_full::MEMORY) {
if (_ram_quota_guard().limit().value > 4 * 1024 * 1024)
/* we get in trouble in core if we use too much memory */
throw Vm_space::Selector_allocator::Out_of_indices();
throw Out_of_ram();
try {
_vm_space.alloc_guest_page_tables(page.hotspot, 1 << page.log2_order);
_vm_space.map_guest(page.addr, page.hotspot,
(1 << page.log2_order) / 4096,
dsc.cacheability(),
dsc.writable() && attribute.writeable,
attribute.executable, NO_FLUSH);
} catch (Page_table_registry::Mapping_cache_full full) {
if (full.reason == Page_table_registry::Mapping_cache_full::MEMORY) {
if (_ram_quota_guard().limit().value > 4 * 1024 * 1024)
/* we get in trouble in core if we use too much memory */
throw Vm_space::Selector_allocator::Out_of_indices();
throw Out_of_ram();
}
if (full.reason == Page_table_registry::Mapping_cache_full::CAPS)
throw Out_of_caps();
return;
}
if (full.reason == Page_table_registry::Mapping_cache_full::CAPS)
throw Out_of_caps();
return;
} catch (Vm_space::Selector_allocator::Out_of_indices) {
Genode::warning("run out of indices - flush all - cap=",
_cap_quota_guard().used(), "/",
@ -277,12 +279,6 @@ void Vm_session_component::_attach_vm_memory(Dataspace_component &dsc,
_ram_quota_guard().limit(), " guest=",
Genode::Hex(0UL - _map.avail()));
_vm_space.map_guest(page.addr, page.hotspot,
(1 << page.log2_order) / 4096,
dsc.cacheability(),
dsc.writable() && attribute.writeable,
attribute.executable, FLUSH);
/* drop all attachment to limit ram usage of this session */
while (true) {
addr_t out_addr = 0;
@ -292,9 +288,14 @@ void Vm_session_component::_attach_vm_memory(Dataspace_component &dsc,
detach(out_addr);
}
} catch (...) {
// Alloc_page_table_failed
Genode::error("alloc_guest_page_table exception");
_vm_space.map_guest(page.addr, page.hotspot,
(1 << page.log2_order) / 4096,
dsc.cacheability(),
dsc.writable() && attribute.writeable,
attribute.executable, FLUSH);
} catch (Vm_space::Alloc_page_table_failed) {
Genode::error("alloc page table failed");
return;
}

133
repos/base-sel4/src/lib/base/x86/vm_session.cc
View File

@ -87,6 +87,8 @@ struct Vcpu : Genode::Thread
addr_t const cr4_mask = CR4_VMX;
addr_t const cr4_set = CR4_VMX;
seL4_VCPUContext _recent_gpr { };
void entry() override
{
/* trigger that thread is up */
@ -113,7 +115,7 @@ struct Vcpu : Genode::Thread
/* initial startup VM exit to get valid VM state */
state.exit_reason = VMEXIT_STARTUP;
_read_sel4_state_async(service, state);
_read_sel4_state(service, state);
Genode::Signal_transmitter(_signal).submit();
@ -155,12 +157,9 @@ struct Vcpu : Genode::Thread
state = Vm_state {};
state.ip.value(seL4_GetMR(SEL4_VMENTER_CALL_EIP_MR));
state.ctrl_primary.value(seL4_GetMR(SEL4_VMENTER_CALL_CONTROL_PPC_MR));
state.inj_info.value(seL4_GetMR(SEL4_VMENTER_CALL_CONTROL_ENTRY_MR));
state.exit_reason = VMEXIT_RECALL;
_read_sel4_state_async(service, state);
_read_sel4_state(service, state);
/* notify VM handler */
Genode::Signal_transmitter(_signal).submit();
@ -189,36 +188,14 @@ struct Vcpu : Genode::Thread
state = Vm_state {};
if (res == SEL4_VMENTER_RESULT_FAULT) {
state.ip.value(seL4_GetMR(SEL4_VMENTER_CALL_EIP_MR));
state.ctrl_primary.value(seL4_GetMR(SEL4_VMENTER_CALL_CONTROL_PPC_MR));
if (res != SEL4_VMENTER_RESULT_FAULT)
state.exit_reason = VMEXIT_RECALL;
else
state.exit_reason = seL4_GetMR(SEL4_VMENTER_FAULT_REASON_MR);
state.ip_len.value(seL4_GetMR(SEL4_VMENTER_FAULT_INSTRUCTION_LEN_MR));
state.qual_primary.value(seL4_GetMR(SEL4_VMENTER_FAULT_QUALIFICATION_MR));
state.qual_secondary.value(seL4_GetMR(SEL4_VMENTER_FAULT_GUEST_PHYSICAL_MR));
state.flags.value(seL4_GetMR(SEL4_VMENTER_FAULT_RFLAGS_MR));
state.intr_state.value(seL4_GetMR(SEL4_VMENTER_FAULT_GUEST_INT_MR));
state.cr3.value(seL4_GetMR(SEL4_VMENTER_FAULT_CR3_MR));
state.ax.value(seL4_GetMR(SEL4_VMENTER_FAULT_EAX));
state.bx.value(seL4_GetMR(SEL4_VMENTER_FAULT_EBX));
state.cx.value(seL4_GetMR(SEL4_VMENTER_FAULT_ECX));
state.dx.value(seL4_GetMR(SEL4_VMENTER_FAULT_EDX));
state.si.value(seL4_GetMR(SEL4_VMENTER_FAULT_ESI));
state.di.value(seL4_GetMR(SEL4_VMENTER_FAULT_EDI));
state.bp.value(seL4_GetMR(SEL4_VMENTER_FAULT_EBP));
_read_sel4_state(service, state);
} else {
state.ip.value(seL4_GetMR(SEL4_VMENTER_CALL_EIP_MR));
state.ctrl_primary.value(seL4_GetMR(SEL4_VMENTER_CALL_CONTROL_PPC_MR));
/* what about the other GPR stuff ? XXX */
state.exit_reason = VMEXIT_RECALL;
_read_sel4_state_async(service, state);
_read_sel4_state(service, state);
if (res != SEL4_VMENTER_RESULT_FAULT) {
Lock::Guard guard(_remote_lock);
if (_remote == PAUSE) {
_remote = NONE;
@ -342,23 +319,6 @@ struct Vcpu : Genode::Thread
" ", res.written);
}
void _write_gpr(seL4_X86_VCPU const service, Vm_state &state)
{
seL4_VCPUContext regs;
regs.eax = state.ax.value();
regs.ebx = state.bx.value();
regs.ecx = state.cx.value();
regs.edx = state.dx.value();
regs.esi = state.si.value();
regs.edi = state.di.value();
regs.ebp = state.bp.value();
seL4_Error res = seL4_X86_VCPU_WriteRegisters(service, &regs);
if (res != seL4_NoError)
Genode::error("setting general purpose register failed ",
(int)res);
}
/*
* Convert to Intel format comprising 32 bits.
*/
@ -373,12 +333,24 @@ struct Vcpu : Genode::Thread
void _write_sel4_state(seL4_X86_VCPU const service, Vm_state &state)
{
if (state.ax.valid()) _recent_gpr.eax = state.ax.value();
if (state.bx.valid()) _recent_gpr.ebx = state.bx.value();
if (state.cx.valid()) _recent_gpr.ecx = state.cx.value();
if (state.dx.valid()) _recent_gpr.edx = state.dx.value();
if (state.si.valid()) _recent_gpr.esi = state.si.value();
if (state.di.valid()) _recent_gpr.edi = state.di.value();
if (state.bp.valid()) _recent_gpr.ebp = state.bp.value();
if (state.ax.valid() || state.cx.valid() ||
state.dx.valid() || state.bx.valid() ||
state.bp.valid() || state.di.valid() ||
state.si.valid()) {
/* XXX read first all values and write back only the changed ones ... */
_write_gpr(service, state);
state.si.valid())
{
seL4_Error res = seL4_X86_VCPU_WriteRegisters(service,
&_recent_gpr);
if (res != seL4_NoError)
Genode::error("setting general purpose registers failed ",
(int)res);
}
if (state.r8.valid() || state.r9.valid() ||
@ -597,36 +569,35 @@ struct Vcpu : Genode::Thread
uint32_t _read_vmcs_32(seL4_X86_VCPU const service, enum Vmcs const field) {
return _read_vmcsX<uint32_t>(service, field); }
void _read_sel4_state_async(seL4_X86_VCPU const service, Vm_state &state)
{
#if 0
state.ax.value(state.ax.value()); /* XXX ? */
state.cx.value(state.cx.value());
state.dx.value(state.dx.value());
state.bx.value(state.bx.value());
state.di.value(state.di.value()); /* XXX ? */
state.si.value(state.si.value());
state.bp.value(state.bp.value());
#endif
state.flags.value(_read_vmcs(service, Vmcs::RFLAGS));
state.ip.value(_read_vmcs(service, Vmcs::RIP));
state.ip_len.value(_read_vmcs(service, Vmcs::EXIT_INST_LEN));
state.cr3.value(_read_vmcs(service, Vmcs::CR3));
state.qual_primary.value(state.qual_primary.value()); /* XXX ? */
state.qual_secondary.value(state.qual_secondary.value()); /* XXX ? */
state.ctrl_primary.value(_read_vmcs(service, Vmcs::CTRL_0));
_read_sel4_state(service, state);
}
void _read_sel4_state(seL4_X86_VCPU const service, Vm_state &state)
{
state.ip.value(seL4_GetMR(SEL4_VMENTER_CALL_EIP_MR));
state.ctrl_primary.value(seL4_GetMR(SEL4_VMENTER_CALL_CONTROL_PPC_MR));
state.ip_len.value(seL4_GetMR(SEL4_VMENTER_FAULT_INSTRUCTION_LEN_MR));
state.qual_primary.value(seL4_GetMR(SEL4_VMENTER_FAULT_QUALIFICATION_MR));
state.qual_secondary.value(seL4_GetMR(SEL4_VMENTER_FAULT_GUEST_PHYSICAL_MR));
state.flags.value(seL4_GetMR(SEL4_VMENTER_FAULT_RFLAGS_MR));
state.intr_state.value(seL4_GetMR(SEL4_VMENTER_FAULT_GUEST_INT_MR));
state.cr3.value(seL4_GetMR(SEL4_VMENTER_FAULT_CR3_MR));
state.ax.value(seL4_GetMR(SEL4_VMENTER_FAULT_EAX));
state.bx.value(seL4_GetMR(SEL4_VMENTER_FAULT_EBX));
state.cx.value(seL4_GetMR(SEL4_VMENTER_FAULT_ECX));
state.dx.value(seL4_GetMR(SEL4_VMENTER_FAULT_EDX));
state.si.value(seL4_GetMR(SEL4_VMENTER_FAULT_ESI));
state.di.value(seL4_GetMR(SEL4_VMENTER_FAULT_EDI));
state.bp.value(seL4_GetMR(SEL4_VMENTER_FAULT_EBP));
_recent_gpr.eax = state.ax.value();
_recent_gpr.ebx = state.bx.value();
_recent_gpr.ecx = state.cx.value();
_recent_gpr.edx = state.dx.value();
_recent_gpr.esi = state.si.value();
_recent_gpr.edi = state.di.value();
_recent_gpr.ebp = state.bp.value();
state.sp.value(_read_vmcs(service, Vmcs::RSP));
state.dr7.value(_read_vmcs(service, Vmcs::DR7));

3
repos/ports/run/seoul.inc
View File

@ -21,6 +21,7 @@ set vmm_vcpu_same_cpu "no"
if {[have_spec sel4]} {
set map_small "yes"
set vmm_vcpu_same_cpu "yes"
# seL4 has no AMD SVM support
if {[have_include "power_on/qemu"]} {
@ -274,7 +275,7 @@ append_if $use_framebuffer config {
if {!$use_fancy_stuff} {
append config {
<start name="seoul" priority="-3" caps="400">
<start name="seoul" priority="-3" caps="800">
<binary name="seoul"/>}
append config "
<resource name=\"RAM\" quantum=\"$memory_vmm_vm\"/>"