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Kernel/riscv64: Only enable interrupts in trap handler if they were on

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Always enabling interrupts is in hindsight obviously a bug, as trapping
code that has interrupts disabled very likely expects that they stay
disabled.
This commit is contained in:
Sönke Holz 2024-02-28 15:54:26 +01:00 committed by Andrew Kaster
parent 6a223c6210
commit 1a312f4265
Notes: sideshowbarker 2024-07-17 06:40:35 +09:00 
Author: https://github.com/spholz
Commit: https://github.com/SerenityOS/serenity/commit/1a312f4265
Pull-request: https://github.com/SerenityOS/serenity/pull/23387
Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 2 additions and 1 deletions
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3
Kernel/Arch/riscv64/Interrupts.cpp
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@ -60,7 +60,8 @@ extern "C" void trap_handler(TrapFrame& trap_frame)
// Exception // Exception
Processor::current().enter_trap(trap_frame, false); Processor::current().enter_trap(trap_frame, false);
Processor::enable_interrupts(); if (trap_frame.regs->sstatus.SPIE == 1)
Processor::enable_interrupts();
using enum RISCV64::CSR::SCAUSE; using enum RISCV64::CSR::SCAUSE;
switch (scause) { switch (scause) {