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Re: [Qemu-block] [Qemu-devel] [PATCH v3 1/3] Switch AMD CFI flash to use
From: |
Eric Blake |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH v3 1/3] Switch AMD CFI flash to use new MMIO API |
Date: |
Tue, 28 Nov 2017 14:05:25 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 11/28/2017 01:47 PM, Michael Nawrocki wrote:
I suspect you'll find that the change of type for 'ret' here
and the 'value' argument to pflash_write() will break compilation
with PFLASH_DEBUG defined, because the type won't match the DPRINTF
format strings any more.
You could either fix up the format strings, or (since there's a
wrapper function here anyway) leave the types of pflash_read()
and pflash_write() alone and let the wrappers implicitly do
the conversion between uint64_t and uint32_t.
...ah, just noticed that in patch 2 you want to add 8-byte
accesses. So you'll need to fix the format strings.
thanks
-- PMM
Yeah, it definitely doesn't compile with PFLASH_DEBUG defined. I'll
update those format strings for the next revision.
Better yet, please fix the PFLASH_DEBUG code to avoid bitrot in the
first place, by rewriting the bad pattern:
/* #define PFLASH_DEBUG */
#ifdef PFLASH_DEBUG
#define DPRINTF(fmt, ...) \
do { \
fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__); \
} while (0)
#else
#define DPRINTF(fmt, ...) do { } while (0)
#endif
into the good pattern:
#ifdef PFLASH_DEBUG
# define PFLASH_PRINT 1
#else
# define PFLASH_PRINT 0
#endif
#define DPRINTF(fmt, ...) \
do { \
if (PFLASH_PRINT) { \
fprintf(stderr, "PFLASH: " fmt, ## __VA_ARGS__); \
}; \
} while (0)
or even better, using the trace infrastructure instead.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
[Qemu-block] [PATCH v3 2/3] Enable 8-byte wide access to AMD CFI devices, Mike Nawrocki, 2017/11/13
[Qemu-block] [PATCH v3 3/3] Add partial flash interleaving to AMD CFI devices, Mike Nawrocki, 2017/11/13