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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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06f75a1f62
The HYP init bounce page is a runtime construct that ensures that the HYP init code does not cross a page boundary. However, this is something we can do perfectly well at build time, by aligning the code appropriately. For arm64, we just align to 4 KB, and enforce that the code size is less than 4 KB, regardless of the chosen page size. For ARM, the whole code is less than 256 bytes, so we tweak the linker script to align at a power of 2 upper bound of the code size Note that this also fixes a benign off-by-one error in the original bounce page code, where a bounce page would be allocated unnecessarily if the code was exactly 1 page in size. On ARM, it also fixes an issue with very large kernels reported by Arnd Bergmann, where stub sections with linker emitted veneers could erroneously trigger the size/alignment ASSERT() in the linker script. Tested-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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| .. | ||
| arm.c | ||
| coproc_a7.c | ||
| coproc_a15.c | ||
| coproc.c | ||
| coproc.h | ||
| emulate.c | ||
| guest.c | ||
| handle_exit.c | ||
| init.S | ||
| interrupts_head.S | ||
| interrupts.S | ||
| Kconfig | ||
| Makefile | ||
| mmio.c | ||
| mmu.c | ||
| perf.c | ||
| psci.c | ||
| reset.c | ||
| trace.h | ||