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| author | Mitchell Horne <mhorne@FreeBSD.org> | 2023-03-31 15:32:39 +0000 |
|---|---|---|
| committer | Mitchell Horne <mhorne@FreeBSD.org> | 2023-04-12 17:08:38 +0000 |
| commit | 98ee3bb87a7a46b2ecae96159258632b8f6f3520 (patch) | |
| tree | 4c8f04d1528b7ba8e54cd1ae8608f1b089d176f8 | |
| parent | 3d55de76e30d34a411630d986153ae803915e95f (diff) | |
| download | src-98ee3bb87a7a46b2ecae96159258632b8f6f3520.tar.gz src-98ee3bb87a7a46b2ecae96159258632b8f6f3520.zip | |
arm64/gicv3: correct the size of the distributor resource
Use the GICD_SIZE macro (0x10000), which is half the size of the current
fixed-sized mapping (128 * 1024 == 0x20000).
In ARM64 Hyper-V instances, it seems the Distributor's registers are
located immediately preceding a range of physical memory in the bus
address space. Thus, when ram0 is attaching and attempts to reserve
SYS_RES_MEMORY resources corresponding to its physmem ranges, it fails,
because the first 0x10000 bytes of this range are already owned by gic0.
PR: 270415
Reported by: whu
Tested by: whu
Differential Revision: https://reviews.freebsd.org/D39260
(cherry picked from commit 3462c371c2562a8144f4245f9967df99874e505f)
| -rw-r--r-- | sys/arm64/arm64/gic_v3_acpi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/arm64/arm64/gic_v3_acpi.c b/sys/arm64/arm64/gic_v3_acpi.c index 9aaf9a783868..568e796a60cb 100644 --- a/sys/arm64/arm64/gic_v3_acpi.c +++ b/sys/arm64/arm64/gic_v3_acpi.c @@ -210,7 +210,7 @@ gic_v3_acpi_identify(driver_t *driver, device_t parent) /* Add the MADT data */ BUS_SET_RESOURCE(parent, dev, SYS_RES_MEMORY, 0, - madt_data.dist->BaseAddress, 128 * 1024); + madt_data.dist->BaseAddress, GICD_SIZE); madt_data.dev = dev; madt_data.rdist_use_gicc = false; |