| commit | 35aa6715ddcd9748bae5bc01563331e8eae8d7cf | |
| author | Peter Maydell <peter.maydell@linaro.org> | |
| Thu, 31 Aug 2023 08:45:17 +0000 (31 09:45 +0100) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Thu, 31 Aug 2023 08:45:17 +0000 (31 09:45 +0100) | ||
| tree | 1939765a951a292aba691ad0afccd1946c290331 | treesnapshot (tar.gz zip) |
| parent | 12517bc978e62ce19df0160ad2ef229169a567b2 | commitdiff |
target/arm: Catch illegal-exception-return from EL3 with bad NSE/NS
The architecture requires (R_TYTWB) that an attempt to return from EL3
when SCR_EL3.{NSE,NS} are {1,0} is an illegal exception return. (This
enforces that the CPU can't ever be executing below EL3 with the
NSE,NS bits indicating an invalid security state.)
We were missing this check; add it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807150618.101357-1-peter.maydell@linaro.org
The architecture requires (R_TYTWB) that an attempt to return from EL3
when SCR_EL3.{NSE,NS} are {1,0} is an illegal exception return. (This
enforces that the CPU can't ever be executing below EL3 with the
NSE,NS bits indicating an invalid security state.)
We were missing this check; add it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230807150618.101357-1-peter.maydell@linaro.org
| target/arm/tcg/helper-a64.c | diffblobblamehistory |