Date: Sat, 8 Oct 2016 07:29:28 +0000 From: Dexuan Cui <decui@microsoft.com> To: kumara rathnavel <kumara.bsd@gmail.com>, "freebsd-drivers@freebsd.org" <freebsd-drivers@freebsd.org> Subject: RE: Interrupt a Core Message-ID: <MWHPR03MB2669ECD5954B1594189CF129BFD90@MWHPR03MB2669.namprd03.prod.outlook.com> In-Reply-To: <CA%2BNzLaMFbAvBCLPU7nWDVuQf6HeF983gqZQdc4fWsXeay_BbVA@mail.gmail.com> References: <CA%2BNzLaMFbAvBCLPU7nWDVuQf6HeF983gqZQdc4fWsXeay_BbVA@mail.gmail.com>
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I guess you may need to have a look at kern/subr_smp.c: smp_rendezvous_cpus() -> ipi_selected(). On X86, a processor core can use Inter Processor Interrupts (IPI) to ask another core to run some function related to a pre-defined vector. -- Dexuan > -----Original Message----- > From: owner-freebsd-drivers@freebsd.org [mailto:owner-freebsd- > drivers@freebsd.org] On Behalf Of kumara rathnavel > Sent: Friday, October 7, 2016 3:23 > To: freebsd-drivers@freebsd.org > Subject: Interrupt a Core > > Hi Guys, > > I have a question. I am in need to implement a core to core implementation > protocol. So I am planning to use shared memory. To generate a interrupt > from one core to another core in x86 how do we do it. > > Thanking you,help
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