From: Imre Kaloz <kaloz@kernel.org>
To: Stian Halseth <stian@itx.no>
Cc: davem@davemloft.net, Andreas Larsson <andreas@gaisler.com>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
glaubitz@physik.fu-berlin.de
Subject: Re: [PATCH 0/3] sparc64: fix a window fill fixup lockup and two fault bugs
Date: Sun, 27 Sep 2026 22:49:37 +0200 [thread overview]
Message-ID: <20260927204937.3814-1-kaloz@kernel.org> (raw)
In-Reply-To: <20260828123707.1852437-1-stian@itx.no>
On Fri, 28 Aug 2026 14:37:04 +0200
Stian Halseth <stian@itx.no> wrote:
> A register window fill that faults is mishandled in three ways on
> sparc64. The first wedges the CPU in kernel mode and takes the
> machine with it; the other two corrupt what the kernel reports
> about the fault, and were found while chasing the first.
Hi Stian,
Confirmed on a Sun Ultra 45. With the series applied it never faulted
through 80 iterations, without them 60 out of 60.
Tested-by: Imre Kaloz <kaloz@kernel.org>
Best,
Imre
prev parent reply other threads:[~2026-09-27 20:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-28 12:37 Stian Halseth
2026-08-28 12:37 ` [PATCH 1/3] sparc64: restore %asi in user_rtt_fill_fixup_common Stian Halseth
2026-08-28 12:37 ` [PATCH 2/3] sparc64: use the fault address for si_addr on window fixup faults Stian Halseth
2026-08-28 12:37 ` [PATCH 3/3] sparc64: decide the TSB huge-page window fixup before the bank switch Stian Halseth
2026-09-27 20:49 ` Imre Kaloz [this message]
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