Xiang Zheng a4b15a8b9e pflash: Only read non-zero parts of backend image ...

Currently we fill the VIRT_FLASH memory space with two 64MB NOR images
when using persistent UEFI variables on virt board. Actually we only use
a very small(non-zero) part of the memory while the rest significant
large(zero) part of memory is wasted.

So this patch checks the block status and only writes the non-zero part
into memory. This requires pflash devices to use sparse files for
backends.

Signed-off-by: Xiang Zheng <zhengxiang9@huawei.com>

[ kraxel: rebased to latest master ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20221220084246.1984871-1-kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2023-01-24 18:26:41 +01:00

..

dataplane

virtio-blk: simplify virtio_blk_dma_restart_cb()

2023-01-23 15:01:23 -05:00

block.c

pflash: Only read non-zero parts of backend image

2023-01-24 18:26:41 +01:00

cdrom.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

ecc.c

vmstate: Constify some VMStateDescriptions

2021-05-02 17:24:50 +02:00

fdc-internal.h

hw/block/fdc: Declare shared prototypes in fdc-internal.h

2021-06-25 08:53:28 -04:00

fdc-isa.c

acpi: fdc-isa: replace ISADeviceClass::build_aml with AcpiDevAmlIfClass:build_dev_aml

2022-06-09 19:32:48 -04:00

fdc-sysbus.c

hw/block/fdc-sysbus: Always mark sysbus floppy controllers as not having DMA

2022-06-11 11:36:14 +02:00

fdc.c

block: Change blk_{pread,pwrite}() param order

2022-07-12 12:14:56 +02:00

hd-geometry.c

hw/block/hd-geometry: Do not override specified bios-chs-trans

2022-08-02 11:21:56 +02:00

Kconfig

hw/block/fdc: Extract SysBus floppy controllers to fdc-sysbus.c

2021-06-25 08:53:28 -04:00

m25p80_sfdp.c

m25p80: Add the w25q01jvq SFPD table

2022-10-24 11:20:16 +02:00

m25p80_sfdp.h

m25p80: Add the w25q01jvq SFPD table

2022-10-24 11:20:16 +02:00

m25p80.c

m25p80: Add the w25q01jvq SFPD table

2022-10-24 11:20:16 +02:00

meson.build

m25p80: Add the n25q256a SFDP table

2022-10-24 11:20:15 +02:00

nand.c

block: Change blk_{pread,pwrite}() param order

2022-07-12 12:14:56 +02:00

onenand.c

block: Change blk_{pread,pwrite}() param order

2022-07-12 12:14:56 +02:00

pflash_cfi01.c

bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx

2023-01-18 11:14:34 +01:00

pflash_cfi02.c

Revert "hw/block/pflash_cfi: Error out if dev length isn't power of 2"

2022-11-08 15:53:40 -05:00

swim.c

qbus: Rename qbus_create_inplace() to qbus_init()

2021-09-30 13:42:10 +01:00

tc58128.c

hw/sh4: Add missing license

2021-03-06 16:18:42 +01:00

trace-events

m25p80: Add basic support for the SFDP command

2022-10-24 11:20:15 +02:00

trace.h

trace: switch position of headers to what Meson requires

2020-08-21 06:18:24 -04:00

vhost-user-blk.c

hw/virtio: generalise CHR_EVENT_CLOSED handling

2022-12-01 02:30:13 -05:00

virtio-blk-common.c

virtio-blk: move config size params to virtio-blk-common

2022-10-07 09:41:51 -04:00

virtio-blk.c

virtio-blk: simplify virtio_blk_dma_restart_cb()

2023-01-23 15:01:23 -05:00

xen_blkif.h

xen: Import other xen/io/*.h

2019-06-24 10:42:30 +01:00

xen-block.c

block: get rid of blk->guest_block_size

2022-06-24 17:07:06 +02:00