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[PATCH v3 3/3] hw/core/loader: clear uninitialized ROM space
From: |
Laurent Vivier |
Subject: |
[PATCH v3 3/3] hw/core/loader: clear uninitialized ROM space |
Date: |
Thu, 29 Apr 2021 16:13:26 +0200 |
As for "hw/elf_ops: clear uninitialized segment space" we need to
clear the uninitialized space when the ELF is set in ROM.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
hw/core/loader.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/core/loader.c b/hw/core/loader.c
index d3e5f3b423f6..8146fdcbb7a0 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -1146,9 +1146,13 @@ static void rom_reset(void *unused)
if (rom->mr) {
void *host = memory_region_get_ram_ptr(rom->mr);
memcpy(host, rom->data, rom->datasize);
+ memset(host + rom->datasize, 0, rom->romsize - rom->datasize);
} else {
address_space_write_rom(rom->as, rom->addr, MEMTXATTRS_UNSPECIFIED,
rom->data, rom->datasize);
+ address_space_set(rom->as, rom->addr + rom->datasize, 0,
+ rom->romsize - rom->datasize,
+ MEMTXATTRS_UNSPECIFIED);
}
if (rom->isrom) {
/* rom needs to be written only once */
--
2.31.1