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Date: Thu, 23 Sep 2021 16:05:54 +0200 From: Juergen Gross <jgross@...e.com> To: Jan Beulich <jbeulich@...e.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com> Cc: Stefano Stabellini <sstabellini@...nel.org>, lkml <linux-kernel@...r.kernel.org>, "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>, "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org> Subject: Re: [PATCH 3/9] xen/x86: make "earlyprintk=xen" work better for PVH Dom0 On 07.09.21 12:09, Jan Beulich wrote: > The xen_hvm_early_write() path better wouldn't be taken in this case; > while port 0xE9 can be used, the hypercall path is quite a bit more > efficient. Put that first, as it may also work for DomU-s (see also > xen_raw_console_write()). > > While there also bail from the function when the first > domU_write_console() failed - later ones aren't going to succeed. > > Signed-off-by: Jan Beulich <jbeulich@...e.com> Reviewed-by: Juergen Gross <jgross@...e.com> Juergen Download attachment "OpenPGP_0xB0DE9DD628BF132F.asc" of type "application/pgp-keys" (3092 bytes) Download attachment "OpenPGP_signature" of type "application/pgp-signature" (496 bytes)
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