Zero copy between ISR, kernel and User

Hello,

I would like to allow the transferring of data between ISR's, kernel and user code, without requiring copying. I envision allocating buffers in the kernel and then mapping them so that they appear at the same addresses to all code, and never being swapped out of memory.

Is this feasible for all supported Linux architectures and is there existing code that someone could point me towards?

Regards,

Wink Saville

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: Zero copy between ISR, kernel and User
    • From: Stephen Hemminger <[email protected]>

• Prev by Date: Re: Tiny error in printk output for clocksource : a3:<6>Time: acpi_pm clocksource has been installed.
• Next by Date: Re[2]: [PATCH 2.6.18] IA64: Add pci_fixup_video into IA64 kernel for embedded VG
• Previous by thread: [PATCH][RFT] libata AHCI reset speed-up, improvements
• Next by thread: Re: Zero copy between ISR, kernel and User
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]