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/freebsd/sys/arm64/arm64/ |
H A D | trap.c | 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation 029c1c48 Sat Mar 26 15:59:34 GMT 2022 Andrew Turner <andrew@FreeBSD.org> Treat cache write as a read in arm64 data faults
On arm64 we can ask the hardware to perform cache operations from userspace. These require read permission however when the memory is unmapped the kernel will receive a write exception. Add a check to see if the cause of the exception is from the cache and pass a memory read fault type to the vm subsystem.
PR: 262836 Reported by: dch Sponsored by: The FreeBSD Foundation
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