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From: Michael Ellerman <>
To:, Nathan Lynch <>
Subject: Re: [PATCH] powerpc/udbg_hvc: retry putc on -EAGAIN
Date: Sun, 06 Jun 2021 22:08:38 +1000	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Fri, 14 May 2021 16:44:22 -0500, Nathan Lynch wrote:
> hvterm_raw_put_chars() calls hvc_put_chars(), which may return -EAGAIN
> when the underlying hcall returns a "busy" status, but udbg_hvc_putc()
> doesn't handle this. When using xmon on a PowerVM guest, this can
> result in incomplete or garbled output when printing relatively large
> amounts of data quickly, such as when dumping the kernel log buffer.
> Call again on -EAGAIN.

Applied to powerpc/next.

[1/1] powerpc/udbg_hvc: retry putc on -EAGAIN


      parent reply	other threads:[~2021-06-06 12:13 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-14 21:44 [PATCH] powerpc/udbg_hvc: retry putc on -EAGAIN Nathan Lynch
2021-05-14 21:44 ` Nathan Lynch
2021-05-21 12:47 ` Greg KH
2021-05-21 12:47   ` Greg KH
2021-05-23 10:51   ` Michael Ellerman
2021-05-23 10:51     ` Michael Ellerman
2021-05-27 11:10     ` Greg KH
2021-05-27 11:10       ` Greg KH
2021-06-06 12:08 ` Michael Ellerman [this message]

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