https://github.com/torvalds/linux
Revision db7dedd0de714a59d8fa2a1be3b6b00543ad415a authored by Christoffer Dall on 19 November 2014, 11:23:54 UTC, committed by Paolo Bonzini on 26 November 2014, 13:40:43 UTC
When running on a system with a GICv3, we currenly don't allow the guest to access the system register interface of the GICv3. We do this by clearing the ICC_SRE_EL2.Enable, which causes all guest accesses to ICC_SRE_EL1 to trap to EL2 and causes all guest accesses to other ICC_ registers to cause an undefined exception in the guest. However, we currently don't handle the trap of guest accesses to ICC_SRE_EL1 and will spill out a warning. The trap just needs to handle the access as RAZ/WI, and a guest that tries to prod this register and set ICC_SRE_EL1.SRE=1, must read back the value (which Linux already does) to see if it succeeded, and will thus observe that ICC_SRE_EL1.SRE was not set. Add the simple trap handler in the sorted table of the system registers. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> [ardb: added cp15 handling] Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent 7cbb87d
Tip revision: db7dedd0de714a59d8fa2a1be3b6b00543ad415a authored by Christoffer Dall on 19 November 2014, 11:23:54 UTC
arm64: KVM: Handle traps of ICC_SRE_EL1 as RAZ/WI
arm64: KVM: Handle traps of ICC_SRE_EL1 as RAZ/WI
Tip revision: db7dedd
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| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
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| security | ||
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| .gitignore | -rw-r--r-- | 1.1 KB |
| .mailmap | -rw-r--r-- | 4.7 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 93.8 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 285.4 KB |
| Makefile | -rw-r--r-- | 53.2 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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