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| author | Marc Zyngier <maz@kernel.org> | 2023-03-30 20:47:45 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-03-30 21:01:09 +0300 |
| commit | c605ee245097d02ed5933e63ac601a8571712457 (patch) | |
| tree | 5a35a28bef8ead75576483e2d24e67bcc3b77267 /arch/arm64/include/asm/sysreg.h | |
| parent | 2b4825a8694018901e641ccc2eafd0fff58d1415 (diff) | |
| download | linux-c605ee245097d02ed5933e63ac601a8571712457.tar.xz | |
KVM: arm64: timers: Allow physical offset without CNTPOFF_EL2
CNTPOFF_EL2 is awesome, but it is mostly vapourware, and no publicly
available implementation has it. So for the common mortals, let's
implement the emulated version of this thing.
It means trapping accesses to the physical counter and timer, and
emulate some of it as necessary.
As for CNTPOFF_EL2, nobody sets the offset yet.
Reviewed-by: Colton Lewis <coltonlewis@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230330174800.2677007-6-maz@kernel.org
Diffstat (limited to 'arch/arm64/include/asm/sysreg.h')
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 9e3ecba3c4e6..f8da9e1b0c11 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -388,6 +388,7 @@ #define SYS_CNTFRQ_EL0 sys_reg(3, 3, 14, 0, 0) +#define SYS_CNTPCT_EL0 sys_reg(3, 3, 14, 0, 1) #define SYS_CNTPCTSS_EL0 sys_reg(3, 3, 14, 0, 5) #define SYS_CNTVCTSS_EL0 sys_reg(3, 3, 14, 0, 6) @@ -400,6 +401,7 @@ #define SYS_AARCH32_CNTP_TVAL sys_reg(0, 0, 14, 2, 0) #define SYS_AARCH32_CNTP_CTL sys_reg(0, 0, 14, 2, 1) +#define SYS_AARCH32_CNTPCT sys_reg(0, 0, 0, 14, 0) #define SYS_AARCH32_CNTP_CVAL sys_reg(0, 2, 0, 14, 0) #define __PMEV_op2(n) ((n) & 0x7) |