- 01 3月, 2016 5 次提交
-
-
由 Marc Zyngier 提交于
The fault decoding process (including computing the IPA in the case of a permission fault) would be much better done in C code, as we have a reasonable infrastructure to deal with the VHE/non-VHE differences. Let's move the whole thing to C, including the workaround for erratum 834220, and just patch the odd ESR_EL2 access remaining in hyp-entry.S. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
由 Marc Zyngier 提交于
As the kernel fully runs in HYP when VHE is enabled, we can directly branch to the kernel's panic() implementation, and not perform an exception return. Add the alternative code to deal with this. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
由 Marc Zyngier 提交于
Running the kernel in HYP mode requires the HCR_E2H bit to be set at all times, and the HCR_TGE bit to be set when running as a host (and cleared when running as a guest). At the same time, the vector must be set to the current role of the kernel (either host or hypervisor), and a couple of system registers differ between VHE and non-VHE. We implement these by using another set of alternate functions that get dynamically patched. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
由 Marc Zyngier 提交于
As non-VHE and VHE have different ways to express the trapping of FPSIMD registers to EL2, make __fpsimd_enabled a patchable predicate and provide a VHE implementation. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
由 Marc Zyngier 提交于
With ARMv8, host and guest share the same system register file, making the save/restore procedure completely symetrical. With VHE, host and guest now have different requirements, as they use different sysregs. In order to prepare for this, add split sysreg save/restore functions for both host and guest. No functional changes yet. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
- 25 1月, 2016 1 次提交
-
-
由 Dave Martin 提交于
Some bits in CPTR are defined as RES1 in the architecture. Setting these bits to zero may unintentionally enable future architecture extensions, allowing guests to use them without supervision by the host. This would be bad: for forwards compatibility, this patch makes sure the affected bits are always written with 1, not 0. This patch only addresses CPTR_EL2. Initialisation of other system registers may still need review. Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NDave Martin <Dave.Martin@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
- 14 12月, 2015 5 次提交
-
-
由 Marc Zyngier 提交于
As we've now switched to the new world switch implementation, remove the weak attributes, as nobody is supposed to override it anymore. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
-
由 Marc Zyngier 提交于
So far, we've implemented the new world switch with a completely different namespace, so that we could have both implementation compiled in. Let's take things one step further by adding weak aliases that have the same names as the original implementation. The weak attributes allows the new implementation to be overriden by the old one, and everything still work. At a later point, we'll be able to simply drop the old code, and everything will hopefully keep working, thanks to the aliases we have just added. This also saves us repainting all the callers. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
-
由 Marc Zyngier 提交于
Add the panic handler, together with the small bits of assembly code to call the kernel's panic implementation. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
-
由 Marc Zyngier 提交于
Implement the fpsimd save restore, keeping the lazy part in assembler (as returning to C would be overkill). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
-
由 Marc Zyngier 提交于
Implement the core of the world switch in C. Not everything is there yet, and there is nothing to re-enter the world switch either. But this already outlines the code structure well enough. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
-