git: 00c276a25024 - stable/13 - Use a 64 bit read to access GICR_TYPER
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Date: Mon, 11 Oct 2021 12:16:03 UTC
The branch stable/13 has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=00c276a2502488f4198dcec4bf1a6d22159e2b62 commit 00c276a2502488f4198dcec4bf1a6d22159e2b62 Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2021-09-15 09:13:41 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2021-10-11 10:50:42 +0000 Use a 64 bit read to access GICR_TYPER The GICv3 ITS only needs to implement 32 bit access to the GICR_TYPER when the CPU implements AArch32. As this may not always be the case use a 64 bit read when checking if the ITS is enabled on the CPU. PR: 258217 Reported by: Olivier Delande <olivier.delande@provenrun.com> Sponsored by: The FreeBSD Foundation (cherry picked from commit 1896a0094317c80d46beff5ad42b68215513c996) --- sys/arm64/arm64/gicv3_its.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/arm64/arm64/gicv3_its.c b/sys/arm64/arm64/gicv3_its.c index 061d5a1dbdb9..9c058dbe7f99 100644 --- a/sys/arm64/arm64/gicv3_its.c +++ b/sys/arm64/arm64/gicv3_its.c @@ -708,7 +708,7 @@ its_init_cpu(device_t dev, struct gicv3_its_softc *sc) return (0); /* Check if the ITS is enabled on this CPU */ - if ((gic_r_read_4(gicv3, GICR_TYPER) & GICR_TYPER_PLPIS) == 0) + if ((gic_r_read_8(gicv3, GICR_TYPER) & GICR_TYPER_PLPIS) == 0) return (ENXIO); rpcpu = gicv3_get_redist(dev);