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Kernel: Optimize sse saving/loading

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Only save and load sse when new thread is trying to execute sse
instruction. There is no need to do that every time we enter kernel.
This commit is contained in:
Bananymous
2024-01-03 02:06:49 +02:00
parent db0650cf10
commit 001e95f973
5 changed files with 61 additions and 27 deletions
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7
kernel/include/kernel/Thread.h
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@@ -75,7 +75,7 @@ namespace Kernel
vaddr_t interrupt_stack_base() const { return m_interrupt_stack ? m_interrupt_stack->vaddr() : 0; }
size_t interrupt_stack_size() const { return m_interrupt_stack ? m_interrupt_stack->size() : 0; }
static Thread& current() ;
static Thread& current();
static pid_t current_tid();
Process& process();
@@ -87,8 +87,9 @@ namespace Kernel
size_t physical_page_count() const { return virtual_page_count(); }
#if __enable_sse
void save_sse() { asm volatile("fxsave %0" :: "m"(m_sse_storage)); }
void load_sse() { asm volatile("fxrstor %0" :: "m"(m_sse_storage)); }
void save_sse();
void load_sse();
static Thread* sse_thread();
#endif
private: