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Devices use irqfd to inject interrupts, we listen to them in the main
thread and activate userspace pic/ioapic accordingly.
BUG=chromium:908689
TEST=lanuch linux guest with `--split-irqchip` flag
Change-Id: If30d17ce7ec9e26dba782c89cc1b9b2ff897a70d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1945798
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Zhuocheng Ding <zhuocheng.ding@intel.corp-partner.google.com>
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This change implements MSI routing and injection, so that service_irq
can actually inject an interrupt into guest.
BUG=chromium:908689
TEST=Unit tests in file.
Change-Id: I2db4f00f569db56f5765c707faaa87c64fd3da9f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1945795
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Zhuocheng Ding <zhuocheng.ding@intel.corp-partner.google.com>
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This change implements service_irq, end_of_interrupt, and just enough to
add some basic tests for those.
Still TODO: Interrupt routing (and tests for that) and tests that
require additional functionality.
BUG=chromium:908689
TEST=Unit tests in file. Integration testing is blocked on rest of split-irqchip being implemented.
Change-Id: Ia8418f9a8bec92b53d99cdafb92f05f82eafa2b1
Reviewed-on: https://chromium-review.googlesource.com/1558935
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
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Previously, code in devices/ couldn't use split_irqchip_common, since
x86_64/ already has a dependency on devices/.
TEST=Built.
BUG=chromium:908689
Change-Id: I481514ae6bbd68e47feecc6f364ca8f4fd798e67
Reviewed-on: https://chromium-review.googlesource.com/1526762
Commit-Ready: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
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