qemu/include/exec/page-vary.h
Marc-André Lureau ec5f7ca857 include: move target page bits declaration to page-vary.h
Since the implementation unit is page-vary.c.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-24-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 14:31:43 +02:00

53 lines
1.7 KiB
C

/*
* Definitions for cpus with variable page sizes.
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EXEC_PAGE_VARY_H
#define EXEC_PAGE_VARY_H
typedef struct {
bool decided;
int bits;
uint64_t mask;
} TargetPageBits;
#ifdef IN_PAGE_VARY
extern bool set_preferred_target_page_bits_common(int bits);
extern void finalize_target_page_bits_common(int min);
#endif
/**
* set_preferred_target_page_bits:
* @bits: number of bits needed to represent an address within the page
*
* Set the preferred target page size (the actual target page
* size may be smaller than any given CPU's preference).
* Returns true on success, false on failure (which can only happen
* if this is called after the system has already finalized its
* choice of page size and the requested page size is smaller than that).
*/
bool set_preferred_target_page_bits(int bits);
/**
* finalize_target_page_bits:
* Commit the final value set by set_preferred_target_page_bits.
*/
void finalize_target_page_bits(void);
#endif /* EXEC_PAGE_VARY_H */