arm64: pvtime: Use correct region size
pvtime uses ARM_PVTIME_BASE instead of ARM_PVTIME_SIZE for the size of the
memory region given to the guest, which causes to the following error when
creating a flash device (via the -F/--flash command line argument):
Error: RAM (read-only) region [2000000-27fffff] would overlap RAM region [1020000-203ffff]
The read-only region represents the guest memory where the flash image is
copied by kvmtool. The region starting at 0x102_0000 (ARM_PVTIME_BASE) is
the pvtime region, which should be 64K in size. kvmtool erroneously creates
the region to be ARM_PVTIME_BASE in size instead, and the last address
becomes:
ARM_PVTIME_BASE + ARM_PVTIME_BASE - 1 = 0x102_0000 + 0x102_0000 - 1 = 0x203_ffff
which corresponds to the end of the region from the error message.
Do the right thing and make the pvtime memory region ARM_PVTIME_SIZE = 64K
bytes, as it was intended.
Fixes: 7d4671e5d372 ("aarch64: Add stolen time support")
Reported-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Sebastian Ene <sebastianene@google.com>
Link: https://lore.kernel.org/r/20220629103905.24480-1-alexandru.elisei@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
1 file changed
