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From: Bertrand Marquis <bertrand.marquis@arm.com>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: [PATCH v4 8/8] xen/arm: Activate TID3 in HCR_EL2
Date: Thu, 17 Dec 2020 15:38:08 +0000	[thread overview]
Message-ID: <d89992ce6177bee2c5331cdc3a90d5b189669d0d.1608214355.git.bertrand.marquis@arm.com> (raw)
In-Reply-To: <cover.1608214355.git.bertrand.marquis@arm.com>
In-Reply-To: <cover.1608214355.git.bertrand.marquis@arm.com>

Activate TID3 bit in HCR register when starting a guest.
This will trap all coprecessor ID registers so that we can give to guest
values corresponding to what they can actually use and mask some
features to guests even though they would be supported by the underlying
hardware (like SVE or MPAM).

Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
---
Changes in V2: Rebase
Changes in V3: Rebase
Changes in V4: Rebase

---
 xen/arch/arm/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 28d9d64558..c1a9ad6056 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -98,7 +98,7 @@ register_t get_default_hcr_flags(void)
 {
     return  (HCR_PTW|HCR_BSU_INNER|HCR_AMO|HCR_IMO|HCR_FMO|HCR_VM|
              (vwfi != NATIVE ? (HCR_TWI|HCR_TWE) : 0) |
-             HCR_TSC|HCR_TAC|HCR_SWIO|HCR_TIDCP|HCR_FB|HCR_TSW);
+             HCR_TID3|HCR_TSC|HCR_TAC|HCR_SWIO|HCR_TIDCP|HCR_FB|HCR_TSW);
 }
 
 static enum {
-- 
2.17.1



  parent reply	other threads:[~2020-12-17 15:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-10 11:56 [xen-unstable bisection] complete test-arm64-arm64-examine osstest service owner
2021-01-10 11:56 ` [xen-unstable test] 158303: regressions - FAIL osstest service owner
2020-12-17 15:38   ` [PATCH v4 0/8] xen/arm: Emulate ID registers Bertrand Marquis
2020-12-17 15:38     ` [PATCH v4 1/8] xen/arm: Use READ_SYSREG instead of 32/64 versions Bertrand Marquis
2020-12-17 23:17       ` Stefano Stabellini
2020-12-18 10:23         ` Bertrand Marquis
2020-12-17 15:38     ` [PATCH v4 2/8] xen/arm: Add ID registers and complete cpuinfo Bertrand Marquis
2020-12-17 23:22       ` Stefano Stabellini
2020-12-17 15:38     ` [PATCH v4 3/8] xen/arm: Add arm64 ID registers definitions Bertrand Marquis
2020-12-17 23:24       ` Stefano Stabellini
2020-12-17 15:38     ` [PATCH v4 4/8] xen/arm: create a cpuinfo structure for guest Bertrand Marquis
2020-12-17 23:26       ` Stefano Stabellini
2020-12-17 15:38     ` [PATCH v4 5/8] xen/arm: Add handler for ID registers on arm64 Bertrand Marquis
2020-12-17 23:31       ` Stefano Stabellini
2020-12-17 15:38     ` [PATCH v4 6/8] xen/arm: Add handler for cp15 ID registers Bertrand Marquis
2020-12-17 23:37       ` Stefano Stabellini
2020-12-18 10:14         ` Bertrand Marquis
2020-12-17 15:38     ` [PATCH v4 7/8] xen/arm: Add CP10 exception support to handle MVFR Bertrand Marquis
2020-12-17 23:40       ` Stefano Stabellini
2020-12-17 15:38     ` Bertrand Marquis [this message]
2020-12-17 23:42       ` [PATCH v4 8/8] xen/arm: Activate TID3 in HCR_EL2 Stefano Stabellini
2020-12-17 23:47     ` [PATCH v4 0/8] xen/arm: Emulate ID registers Stefano Stabellini
2020-12-18 10:12       ` Bertrand Marquis
2021-01-05 16:06     ` Smoke test failure on Arm (was Re: [PATCH v4 0/8] xen/arm: Emulate ID registers) Julien Grall
2021-01-05 16:28       ` André Przywara
2021-01-05 18:44         ` Stefano Stabellini
2021-01-05 19:05           ` [PATCH] xen/arm: do not read MVFR2 on arm32 Stefano Stabellini
2021-01-05 19:20             ` Julien Grall
2021-01-05 19:15           ` Smoke test failure on Arm (was Re: [PATCH v4 0/8] xen/arm: Emulate ID registers) Julien Grall
2021-01-05 22:43             ` Stefano Stabellini
2021-01-06 18:29               ` Julien Grall
2021-01-06 20:55                 ` Stefano Stabellini
2021-01-08 11:12                   ` Julien Grall
2021-01-11 11:19                     ` Smoke test failure on Arm (was Re: [PATCH v4 0/8] xen/arm: Emulate ID registers) [and 2 more messages] Ian Jackson
2021-01-11 11:25                       ` Julien Grall

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