Date: Wed, 16 Jan 2019 03:46:27 +0000 (UTC) From: Marcelo Araujo <araujo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343077 - head/usr.sbin/bhyve Message-ID: <201901160346.x0G3kRCS032138@repo.freebsd.org>
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Author: araujo Date: Wed Jan 16 03:46:27 2019 New Revision: 343077 URL: https://svnweb.freebsd.org/changeset/base/343077 Log: Fix broken uart on Win2016 guest. Obtained from: Joyent (commit/2bf1a940afbd1382faff159e7c93c72779ca10f4) MFC after: 3 weeks. Modified: head/usr.sbin/bhyve/uart_emul.c Modified: head/usr.sbin/bhyve/uart_emul.c ============================================================================== --- head/usr.sbin/bhyve/uart_emul.c Wed Jan 16 03:07:32 2019 (r343076) +++ head/usr.sbin/bhyve/uart_emul.c Wed Jan 16 03:46:27 2019 (r343077) @@ -431,6 +431,13 @@ uart_write(struct uart_softc *sc, int offset, uint8_t sc->thre_int_pending = true; break; case REG_IER: + /* Assert an interrupt if re-enabling the THRE intr, since we + * always report THRE as active in the status register. + */ + if ((sc->ier & IER_ETXRDY) == 0 && + (value & IER_ETXRDY) != 0) { + sc->thre_int_pending = true; + } /* * Apply mask so that bits 4-7 are 0 * Also enables bits 0-3 only if they're 1
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