From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Joerg Roedel <joro@8bytes.org>
Cc: Magnus Damm <damm+renesas@opensource.se>,
iommu@lists.linux-foundation.org,
linux-renesas-soc@vger.kernel.org,
Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH 0/2] iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3
Date: Wed, 4 Sep 2019 14:08:00 +0200 [thread overview]
Message-ID: <20190904120802.2163-1-geert+renesas@glider.be> (raw)
Hi Jörg,
According to recent errata, the IOMMU in R-Car Gen3 SoCs does not
support cache snoop transactions for page table walk requests.
Hence this patch series skips the related setup when running on R-Car
Gen3, after doing a customary cleanup of related definitions.
Tested on R-Car H3 ES2.0 with QEMU+KVM and VFIO for EtherAVB.
Thanks!
Geert Uytterhoeven (1):
iommu/ipmmu-vmsa: Move IMTTBCR_SL0_TWOBIT_* to restore sort order
Hai Nguyen Pham (1):
iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3
drivers/iommu/ipmmu-vmsa.c | 78 ++++++++++++++++++++------------------
1 file changed, 41 insertions(+), 37 deletions(-)
--
2.17.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next reply other threads:[~2019-09-04 12:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-04 12:08 Geert Uytterhoeven [this message]
2019-09-04 12:08 ` [PATCH 1/2] iommu/ipmmu-vmsa: Move IMTTBCR_SL0_TWOBIT_* to restore sort order Geert Uytterhoeven
2019-09-05 8:44 ` Simon Horman
2019-09-04 12:08 ` [PATCH 2/2] iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3 Geert Uytterhoeven
2019-09-05 8:44 ` Simon Horman
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