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| author | Marc Zyngier <[email protected]> | 2016-10-14 14:13:07 +0000 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2016-10-17 10:59:30 +0000 |
| commit | 589ce5f447b8610df0dbd6935b56d5cda17b9cec (patch) | |
| tree | 16ccd5619168aa7f2e67139badec48e9e23d5e69 /scripts/gcc-plugins | |
| parent | Linux 4.9-rc1 (diff) | |
| download | kernel-589ce5f447b8610df0dbd6935b56d5cda17b9cec.tar.gz kernel-589ce5f447b8610df0dbd6935b56d5cda17b9cec.zip | |
irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
The GICv3 architecture specification mentions that a 64bit
register can be accessed using two 32bit accesses. What it
doesn't mention is that this is only guaranteed on a system
that implements AArch32, and a pure AArch64 system is allowed
not to support this. This causes issues with the GICR_TYPER
and GITS_TYPER registers, which are both RO 64bit registers.
In order to solve this, this patch switches the TYPER accesses
to the gic_read_typer macro already used in other parts of the
driver. This makes sure that we always use a 64bit access on
64bit systems, and two 32bit accesses on 32bit system.
Signed-off-by: Marc Zyngier <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins')
0 files changed, 0 insertions, 0 deletions