kvm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Huacai Chen <chenhc@lemote.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org,
	Fuxin Zhang <zhangfx@lemote.com>,
	Huacai Chen <chenhuacai@gmail.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Huacai Chen <chenhc@lemote.com>
Subject: [PATCH V6 08/15] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3
Date: Sun, 17 May 2020 12:06:05 +0800	[thread overview]
Message-ID: <1589688372-3098-9-git-send-email-chenhc@lemote.com> (raw)
In-Reply-To: <1589688372-3098-1-git-send-email-chenhc@lemote.com>

Loongson-3's indexed cache operations need a node-id in the address,
but in KVM guest the node-id may be incorrect. So, let indexed cache
operations cause guest exit on Loongson-3.

Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/kvm/vz.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index f9fbbc16..ab320f0 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -2853,8 +2853,12 @@ static int kvm_vz_hardware_enable(void)
 	write_c0_guestctl0(MIPS_GCTL0_CP0 |
 			   (MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) |
 			   MIPS_GCTL0_CG | MIPS_GCTL0_CF);
-	if (cpu_has_guestctl0ext)
-		set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+	if (cpu_has_guestctl0ext) {
+		if (current_cpu_type() != CPU_LOONGSON64)
+			set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+		else
+			clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+	}
 
 	if (cpu_has_guestid) {
 		write_c0_guestctl1(0);
-- 
2.7.0


  parent reply	other threads:[~2020-05-17  4:08 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-17  4:05 [PATCH V6 00/15] KVM: MIPS: Add Loongson-3 support (Host Side) Huacai Chen
2020-05-17  4:05 ` [PATCH V6 01/15] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data) Huacai Chen
2020-05-19 11:49   ` Sasha Levin
2020-05-17  4:05 ` [PATCH V6 02/15] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits Huacai Chen
2020-05-17  4:06 ` [PATCH V6 03/15] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16 Huacai Chen
2020-05-17  4:06 ` [PATCH V6 04/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST Huacai Chen
2020-05-17  4:06 ` [PATCH V6 05/15] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd Huacai Chen
2020-05-17  4:06 ` [PATCH V6 06/15] KVM: MIPS: Introduce and use cpu_guest_has_ldpte Huacai Chen
2020-05-17  4:06 ` [PATCH V6 07/15] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3 Huacai Chen
2020-05-17  4:06 ` Huacai Chen [this message]
2020-05-17  4:06 ` [PATCH V6 09/15] KVM: MIPS: Add more types of virtual interrupts Huacai Chen
2020-05-17  4:06 ` [PATCH V6 10/15] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support Huacai Chen
2020-05-17  4:06 ` [PATCH V6 11/15] KVM: MIPS: Add CPUCFG emulation for Loongson-3 Huacai Chen
2020-05-17  4:06 ` [PATCH V6 12/15] KVM: MIPS: Add CONFIG6 and DIAG registers emulation Huacai Chen
2020-05-17  4:06 ` [PATCH V6 13/15] KVM: MIPS: Add more MMIO load/store instructions emulation Huacai Chen
2020-05-17  4:06 ` [PATCH V6 14/15] KVM: MIPS: Enable KVM support for Loongson-3 Huacai Chen
2020-05-17  4:06 ` [PATCH V6 15/15] MAINTAINERS: Update KVM/MIPS maintainers Huacai Chen
2020-05-17  8:22   ` Thomas Bogendoerfer
2020-05-18  8:23     ` Aleksandar Markovic
2020-05-21  9:22       ` Aleksandar Markovic
2020-05-21  9:45         ` Huacai Chen
2020-05-21 11:04           ` Aleksandar Markovic
2020-05-21 14:04             ` Paolo Bonzini
2020-05-22  5:34               ` Huacai Chen
2020-05-22  7:24                 ` Paolo Bonzini
2020-05-22 12:16                   ` 毛碧波
2020-05-23  2:35                     ` Huacai Chen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1589688372-3098-9-git-send-email-chenhc@lemote.com \
    --to=chenhc@lemote.com \
    --cc=aleksandar.qemu.devel@gmail.com \
    --cc=chenhuacai@gmail.com \
    --cc=jiaxun.yang@flygoat.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-mips@vger.kernel.org \
    --cc=pbonzini@redhat.com \
    --cc=tsbogend@alpha.franken.de \
    --cc=zhangfx@lemote.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).