From 9010e094d66809c5c9e364954d42d41436302f29 Mon Sep 17 00:00:00 2001 From: Ciro Santilli Date: Tue, 28 Aug 2018 13:24:33 +0100 Subject: [PATCH] gem5: fs.py EL3 and EL2 require enabling with cli options --- README.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.adoc b/README.adoc index 52db887..d8fd5d3 100644 --- a/README.adoc +++ b/README.adoc @@ -7385,7 +7385,7 @@ but the approximation is reasonable. + It is used mostly for microarchitecture research purposes: when you are making a new chip technology, you don't really need to specialize enormously to an existing microarchitecture, but rather develop something that will work with a wide range of future architectures. ** runs are deterministic by default, unlike QEMU which has a special <> mode, that requires first playing the content once and then replaying -** gem5 ARM at least appears to implement more low level CPU functionality than QEMU, e.g. QEMU only added EL2 in 2018, and EL3 is yet unimplemented: https://stackoverflow.com/questions/42824706/qemu-system-aarch64-entering-el1-when-emulating-a53-power-up +** gem5 ARM at least appears to implement more low level CPU functionality than QEMU, e.g. QEMU only added EL2 in 2018, and EL3 is yet unimplemented: https://stackoverflow.com/questions/42824706/qemu-system-aarch64-entering-el1-when-emulating-a53-power-up gem5 `fs.py` can enable EL3 with `-V` and EL2 with `--enable-security-extensions` * disadvantage of gem5: slower than QEMU, see: <> + This implies that the user base is much smaller, since no Android devs.