https://bugzilla.kernel.org/show_bug.cgi?id=65561
--- Comment #14 from Jatin Kumar <jatin.iitde...@gmail.com> ---
(In reply to Jidong Xiao from comment #8)
> Hi, Jatin,
>
> "from inside the OS" means from within the Guest OS right?
> (In reply to Jatin Kumar from comment #5)
Hello Jidong,
Yes it means from within guest OS. Sample code block is like this:
intr_register_int(1, 3, INTR_OFF, intr_debug_handler_out, "#DB Debug
Exception");
asm volatile(
"pushfl \n\t"
"orl $0x100, (%%esp) \n\t"
"popfl \n\t"
"nop \n\t"
"nop \n\t"
"outb %b0, %w1 \n\t"
"nop \n\t" <------- Not getting Debug Trap before executing this
"nop \n\t"
"pushfl \n\t"
"xorl $0x100, (%%esp) \n\t"
"popfl \n\t"
:: "a"(2), "Nd" (80)
);
Debug handler simply prints the EIP from interrupt frame and I don't see the
EIP of marked instruction.
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