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Save/Restore shadow GS too while scheduling tasks

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This commit is contained in:
Alex
2023-05-04 22:39:37 +03:00
parent 7abbc51d99
commit 533b945e84
4 changed files with 19 additions and 2 deletions
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2
Tasking/Task.cpp
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@ -429,6 +429,7 @@ namespace Tasking
Thread->Stack = new Memory::StackGuard(false, Parent->PageTable);
#if defined(a64)
SecurityManager.TrustToken(Thread->Security.UniqueToken, TTL::TrustedByKernel);
Thread->ShadowGSBase = CPU::x64::rdmsr(CPU::x64::MSRID::MSR_SHADOW_GS_BASE);
Thread->GSBase = CPU::x64::rdmsr(CPU::x64::MSRID::MSR_GS_BASE);
Thread->FSBase = CPU::x64::rdmsr(CPU::x64::MSRID::MSR_FS_BASE);
Thread->Registers.cs = GDT_KERNEL_CODE;
@ -448,6 +449,7 @@ namespace Tasking
Thread->Stack = new Memory::StackGuard(true, Parent->PageTable);
#if defined(a64)
SecurityManager.TrustToken(Thread->Security.UniqueToken, TTL::Untrusted);
Thread->ShadowGSBase = CPU::x64::rdmsr(CPU::x64::MSRID::MSR_SHADOW_GS_BASE);
Thread->GSBase = 0;
Thread->FSBase = 0;
Thread->Registers.cs = GDT_USER_CODE;