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Fixed tasking SSE

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This commit is contained in:
Alex
2022-12-29 02:05:07 +02:00
parent 5da3b3ae6c
commit e53bc14240
7 changed files with 88 additions and 57 deletions
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27
Core/CPU.cpp
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@ -209,30 +209,35 @@ namespace CPU
debug("Enabling UMIP, SMEP & SMAP support...");
x64::cpuid(0x1, &rax, &rbx, &rcx, &rdx);
if (rdx & x64::CPUID_FEAT_RDX_UMIP)
if (rdx & x64::CPUID_FEAT_RDX_UMIP) // https://en.wikipedia.org/wiki/Control_register
{
if (!BSP)
KPrint("UMIP is supported.");
fixme("Not going to enable UMIP.");
cr4.UMIP = 1;
debug("UMIP is supported.");
// cr4.UMIP = 1;
}
if (rdx & x64::CPUID_FEAT_RDX_SMEP)
if (rdx & x64::CPUID_FEAT_RDX_SMEP) // https://en.wikipedia.org/wiki/Control_register#SMEP
// https://web.archive.org/web/20160312223150/http://ncsi.com/nsatc11/presentations/wednesday/emerging_technologies/fischer.pdf
{
if (!BSP)
KPrint("SMEP is supported.");
fixme("Not going to enable SMEP.");
cr4.SMEP = 1;
debug("SMEP is supported.");
// cr4.SMEP = 1;
}
if (rdx & x64::CPUID_FEAT_RDX_SMAP)
if (rdx & x64::CPUID_FEAT_RDX_SMAP) // https://en.wikipedia.org/wiki/Supervisor_Mode_Access_Prevention
{
if (!BSP)
KPrint("SMAP is supported.");
fixme("Not going to enable SMAP.");
cr4.SMAP = 1;
debug("SMAP is supported.");
// cr4.SMAP = 1;
}
if (strcmp(Hypervisor(), x86_CPUID_VENDOR_VIRTUALBOX) == 0 &&
strcmp(Hypervisor(), x86_CPUID_VENDOR_TCG) == 0)
if (strcmp(Hypervisor(), x86_CPUID_VENDOR_VIRTUALBOX) != 0 &&
strcmp(Hypervisor(), x86_CPUID_VENDOR_TCG) != 0)
{
debug("Writing CR4...");
x64::writecr4(cr4);
debug("Wrote CR4.");
}
else
{
if (!BSP)