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xen/pass-through: constify some static data

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This is done indirectly by adjusting two typedefs and helps emphasizing
that the respective tables aren't supposed to be modified at runtime
(as they may be shared between devices).

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Jan Beulich 2015-06-05 13:04:55 +01:00 committed by Stefano Stabellini
parent 3782f60d20
commit 74526eb018
2 changed files with 5 additions and 6 deletions
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8
hw/xen/xen_pt.h
View File

@ -31,7 +31,7 @@ void xen_pt_log(const PCIDevice *d, const char *f, ...) GCC_FMT_ATTR(2, 3);
/* Helper */
#define XEN_PFN(x) ((x) >> XC_PAGE_SHIFT)
typedef struct XenPTRegInfo XenPTRegInfo;
typedef const struct XenPTRegInfo XenPTRegInfo;
typedef struct XenPTReg XenPTReg;
typedef struct XenPCIPassthroughState XenPCIPassthroughState;
@ -133,11 +133,11 @@ struct XenPTReg {
uint32_t data; /* emulated value */
};
typedef struct XenPTRegGroupInfo XenPTRegGroupInfo;
typedef const struct XenPTRegGroupInfo XenPTRegGroupInfo;
/* emul reg group size initialize method */
typedef int (*xen_pt_reg_size_init_fn)
(XenPCIPassthroughState *, const XenPTRegGroupInfo *,
(XenPCIPassthroughState *, XenPTRegGroupInfo *,
uint32_t base_offset, uint8_t *size);
/* emulated register group information */
@ -152,7 +152,7 @@ struct XenPTRegGroupInfo {
/* emul register group management table */
typedef struct XenPTRegGroup {
QLIST_ENTRY(XenPTRegGroup) entries;
const XenPTRegGroupInfo *reg_grp;
XenPTRegGroupInfo *reg_grp;
uint32_t base_offset;
uint8_t size;
QLIST_HEAD(, XenPTReg) reg_tbl_list;

3
hw/xen/xen_pt_config_init.c
View File

@ -96,8 +96,7 @@ XenPTReg *xen_pt_find_reg(XenPTRegGroup *reg_grp, uint32_t address)
}
static uint32_t get_throughable_mask(const XenPCIPassthroughState *s,
const XenPTRegInfo *reg,
uint32_t valid_mask)
XenPTRegInfo *reg, uint32_t valid_mask)
{
uint32_t throughable_mask = ~(reg->emu_mask | reg->ro_mask);