Why don’t you guys argue about Linux in Russian? That will make it so much
easier for the rest of us to gloss over it.
–
Jake Oshins
Hyper-V I/O Architect
Windows Kernel Team
This post implies no warranties and confers no rights.
wrote in message news:xxxxx@ntdev…
>
>>>> They also have spin_lock_irqsave() or such.
>
>> > yep. similar to these “special” spinlocks at HIGH_LEVEL that Jake O.
>
>> No, similar to KeAcquireInterruptSpinLock.
>
> Actually, Pavel is absolutely correct - spin_lock_irqsave() and
> spin_lock_irq() disable all interrupts on a given CPU; spin_lock_bh()
> disables software interrupts but hardware ones are still enabled; and
> spin_lock() does not disable any interrupts. In addition to above
> mentioned “conventional” spinlocks, Linux kernel provides reader/writer
> forms of spinlock as well. There are no equivalents to
> KeAcquireInterruptSpinLock() under Linux, because it does not support the
> concept of IRQL to the extent Windows does. Furthermore, it does not
> really support interrupt spinlocks in Windows programmer’s understanding -
> instead, it allows spinlock acquisition right in ISR…
>
>
> Anton Bassov
>
Well, i still stand by my word “I hate biochemists, who talk chemistry in
a biologist crowd, and vice-versa”, and it does not matter if it is
russian or ML or milner or lisp.
-pro
Why don’t you guys argue about Linux in Russian? That will make it so
much
easier for the rest of us to gloss over it.
–
Jake Oshins
Hyper-V I/O Architect
Windows Kernel Team
This post implies no warranties and confers no rights.
wrote in message news:xxxxx@ntdev…
>>
>>>>> They also have spin_lock_irqsave() or such.
>>
>>> > yep. similar to these “special” spinlocks at HIGH_LEVEL that Jake O.
>>
>>> No, similar to KeAcquireInterruptSpinLock.
>>
>> Actually, Pavel is absolutely correct - spin_lock_irqsave() and
>> spin_lock_irq() disable all interrupts on a given CPU; spin_lock_bh()
>> disables software interrupts but hardware ones are still enabled; and
>> spin_lock() does not disable any interrupts. In addition to above
>> mentioned “conventional” spinlocks, Linux kernel provides reader/writer
>> forms of spinlock as well. There are no equivalents to
>> KeAcquireInterruptSpinLock() under Linux, because it does not support
>> the
>> concept of IRQL to the extent Windows does. Furthermore, it does not
>> really support interrupt spinlocks in Windows programmer’s understanding
>> -
>> instead, it allows spinlock acquisition right in ISR…
>>
>>
>> Anton Bassov
>>
>
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Why don’t you guys argue about Linux in Russian? That will make it so
much easier for the rest of us to gloss over it.
IRQL’s are a complicated thing (well… until you get your head around
them they are), and I think that there are enough people on this list
who know the details of how Linux does things but not Windows, so I
think that this is actually a useful discussion. IMHO.
Any other Linux discussion though, Russian please 
James