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Kernel: Enable SMAP protection on IRQ and exception entry

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It would be nice to do this in the assembly code, but we have to check
if the feature is available before doing a CLAC, so I've put this in
the C++ code for now.
This commit is contained in:
Andreas Kling 2020-01-08 07:27:37 +01:00
parent fe9680f0a4
commit 372f9e9a11
2 changed files with 6 additions and 0 deletions
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Kernel/Arch/i386/PIT.cpp
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@ -38,6 +38,7 @@ static u32 s_seconds_since_boot;
void timer_interrupt_handler(RegisterDump regs)
{
clac();
IRQHandlerScope scope(IRQ_TIMER);
if (++s_ticks_this_second >= TICKS_PER_SECOND) {
// FIXME: Synchronize with the RTC somehow to prevent drifting apart.