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qemu/pc-bios/optionrom
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Marcus Hähnel 48972f8cad optionrom: add a DMA-enabled multiboot ROM 
Add a new option rom for the multiboot loader, using DMA transfers to copy
data instead of "rep insb".

This significantly lowers QEMU's startup latency by a factor of about 40,
for example, going from 30sec to 0.8sec when loading modules of 120MB
in size.

Signed-off-by: Marcus Hähnel <marcus.haehnel@kernkonzept.com>
Signed-off-by: Adam Lackorzynski <adam@l4re.org>
[Modified to keep the non-DMA code depending on #ifdef USE_FW_CFG_DMA;
 do not write below stack. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-02 15:57:27 +01:00
..
code16gcc.h Add optionrom compatible with fw_cfg DMA version 2016-07-14 15:50:52 +02:00
flat.lds optionrom: fix compilation with mingw docker target 2016-08-09 22:57:36 +02:00
kvmvapic.S
linuxboot_dma.c linuxboot_dma: move common functions in a new header 2019-02-05 16:50:17 +01:00
linuxboot.S linuxboot: fix loading old kernels 2014-12-15 12:21:03 +01:00
Makefile optionrom: add a DMA-enabled multiboot ROM 2021-11-02 15:57:27 +01:00
multiboot_dma.S optionrom: add a DMA-enabled multiboot ROM 2021-11-02 15:57:27 +01:00
multiboot.S optionrom: add a DMA-enabled multiboot ROM 2021-11-02 15:57:27 +01:00
optionrom.h optionrom: add a DMA-enabled multiboot ROM 2021-11-02 15:57:27 +01:00
optrom_fw_cfg.h linuxboot_dma: move common functions in a new header 2019-02-05 16:50:17 +01:00
optrom.h linuxboot_dma: move common functions in a new header 2019-02-05 16:50:17 +01:00
pvh_main.c optionrom/pvh: scan entire RSDP Area 2020-03-16 22:07:42 +01:00
pvh.S optionrom: add new PVH option rom 2019-02-05 16:50:17 +01:00