635c6af9fc
Note that there is a bug in 4.11 (also present in recent 4.6 and 4.8) which causes an infrequent assert failure when running NetBSD PV guests. The root cause has not been found, but a workaround is inclued which doesn't seems to have ill effects. See xenkernel411/patches/patch-zz-bouyer for details.
34 lines
1.3 KiB
C
34 lines
1.3 KiB
C
$NetBSD: patch-tools_qemu-xen-traditional_hw_e1000.c,v 1.1 2018/07/24 13:40:11 bouyer Exp $
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From sysutils/xentools33/patches/patch-ak.
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qemu-0.13.x will include this fix:
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http://git.qemu.org/qemu.git/commit/?id=9651ac55e5de0e1534d898316cc851af6ffc4334
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--- tools/qemu-xen-traditional/hw/e1000.c.orig 2014-10-06 17:50:24.000000000 +0200
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+++ tools/qemu-xen-traditional/hw/e1000.c 2015-01-19 13:16:38.000000000 +0100
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@@ -265,16 +265,20 @@
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s->eecd_state.old_eecd = val & (E1000_EECD_SK | E1000_EECD_CS |
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E1000_EECD_DI|E1000_EECD_FWE_MASK|E1000_EECD_REQ);
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+ if (!(E1000_EECD_CS & val)) // CS inactive; nothing to do
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+ return;
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+ if (E1000_EECD_CS & (val ^ oldval)) { // CS rise edge; reset state
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+ s->eecd_state.val_in = 0;
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+ s->eecd_state.bitnum_in = 0;
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+ s->eecd_state.bitnum_out = 0;
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+ s->eecd_state.reading = 0;
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+ }
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if (!(E1000_EECD_SK & (val ^ oldval))) // no clock edge
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return;
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if (!(E1000_EECD_SK & val)) { // falling edge
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s->eecd_state.bitnum_out++;
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return;
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}
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- if (!(val & E1000_EECD_CS)) { // rising, no CS (EEPROM reset)
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- memset(&s->eecd_state, 0, sizeof s->eecd_state);
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- return;
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- }
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s->eecd_state.val_in <<= 1;
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if (val & E1000_EECD_DI)
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s->eecd_state.val_in |= 1;
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