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accel/tcg: Use interval tree for user-only page tracking

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Finish weaning user-only away from PageDesc.

Using an interval tree to track page permissions means that
we can represent very large regions efficiently.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/290
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/967
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1214
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-05 07:34:51 -07:00
parent d941c086b8
commit 67ff2186b0
4 changed files with 451 additions and 210 deletions
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4
accel/tcg/internal.h
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@ -24,9 +24,7 @@
#endif
typedef struct PageDesc {
#ifdef CONFIG_USER_ONLY
unsigned long flags;
#else
#ifndef CONFIG_USER_ONLY
QemuSpin lock;
/* list of TBs intersecting this ram page */
uintptr_t first_tb;