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Enable Global Pages

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This commit is contained in:
Alex 2022-12-05 00:43:59 +02:00
parent a47f998764
commit 58dfc9c407
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 9 additions and 0 deletions
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9
Core/CPU.cpp
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@ -181,6 +181,14 @@ namespace CPU
x64::CR4 cr4 = x64::readcr4();
uint32_t rax, rbx, rcx, rdx;
x64::cpuid(0x1, &rax, &rbx, &rcx, &rdx);
if (rdx & x64::CPUID_FEAT_RDX_PGE)
{
debug("Enabling global pages support...");
if (!BSP)
KPrint("Global Pages is supported.");
cr4.PGE = 1;
}
if (rdx & x64::CPUID_FEAT_RDX_SSE)
{
debug("Enabling SSE support...");
@ -197,6 +205,7 @@ namespace CPU
cr0.NW = 0;
cr0.CD = 0;
cr0.WP = 1;
x64::writecr0(cr0);