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2007 Apr 18
2
[RFC PATCH 23/35] Increase x86 interrupt vector range
In-Reply-To: <20060509085157.070289000@sous-sol.org> On Tue, 09 May 2006 00:00:23 -0700, Chris Wright wrote: > Remove the limit of 256 interrupt vectors by changing the value > stored in orig_{e,r}ax to be the negated interrupt vector. > The orig_{e,r}ax needs to be < 0 to allow the signal code to > distinguish between return from interrupt and return from syscall. > With this change applied, NR_IRQS can be > 256. > > Xen extends the IRQ numbering space to include r...
2007 Apr 18
2
[RFC PATCH 23/35] Increase x86 interrupt vector range
In-Reply-To: <20060509085157.070289000@sous-sol.org> On Tue, 09 May 2006 00:00:23 -0700, Chris Wright wrote: > Remove the limit of 256 interrupt vectors by changing the value > stored in orig_{e,r}ax to be the negated interrupt vector. > The orig_{e,r}ax needs to be < 0 to allow the signal code to > distinguish between return from interrupt and return from syscall. > With this change applied, NR_IRQS can be > 256. > > Xen extends the IRQ numbering space to include r...