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[Qemu-devel] [PATCH 4/6] pflash_cfi01: memory region should be set to en
From: |
Jordan Justen |
Subject: |
[Qemu-devel] [PATCH 4/6] pflash_cfi01: memory region should be set to enable readonly mode |
Date: |
Sun, 28 Apr 2013 01:32:19 -0700 |
This causes any writes to the memory region to trap to the
device handler.
This is also important for KVM, because this allows the memory
region to be set using KVM_MEM_READONLY, which allows the memory
region to be read & executed. (Without this, KVM will not support
executing from the memory region.)
Signed-off-by: Jordan Justen <address@hidden>
---
hw/block/pflash_cfi01.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 3ff20e0..b65225e 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -596,6 +596,8 @@ static int pflash_cfi01_init(SysBusDevice *dev)
}
}
+ memory_region_set_readonly(&pfl->mem, true);
+
if (pfl->bs) {
pfl->ro = bdrv_is_read_only(pfl->bs);
} else {
--
1.7.10.4
Re: [Qemu-devel] [PATCH 6/6] pc_sysfw: change rom_only default to 0, Markus Armbruster, 2013/04/29
[Qemu-devel] [PATCH 5/6] pc_sysfw: allow flash memory to be used with KVM, Jordan Justen, 2013/04/28
[Qemu-devel] [PATCH 2/6] kvm: support using KVM_MEM_READONLY flag for readonly regions, Jordan Justen, 2013/04/28