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arch/arm64: Optimized SGI to avoid VM exit. #14689

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arch/arm64: Optimized SGI to avoid VM exit. #14689

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Commits on Nov 7, 2024

  1. arch/arm64: Optimized SGI to avoid VM exit. 

    In the virtualized environment, each time an SGI is sent, the value of IGROUPR0 needs to be read once. Since the GIC Redistributor is a purely emulated device, each read of IGROUPR0 will cause a VM exit, causing serious performance degradation. This patch replaces the read with the value previously set in `gicv3_cpuif_init`, and we assume that this value has not been modified after initialization.

Signed-off-by: ouyangxiangzhen <[email protected]>
    @Fix-Point
    Fix-Point committed Nov 7, 2024
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